Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (2024)

The Magical Slow Cooker » Recipes » Dinner » Tasty, Easy Recipe for Slow Cooker Pepper Steak with Onion

by Sarah Olson on | Updated 218 Comments

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Pepper steak is a Chinese-inspired meal with plenty of sauce, bell peppers, and onions. This is a stir-fry-style meal but made in the slow cooker! Wonderful served over rice and has plenty of sauce (or gravy) to go around.

Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (1)

Why this recipe works:

This recipe is easy but has so much flavor, tastes like a restaurant-style meal but is easily made at home.

The sauce has quite a few ingredients, but all are pantry staples and easy to assemble.

The slow cooking tenderizes the beef way more than cooking on the stovetop, and the sauce marries together during the long cooking time.

How to Make Slow Cooker Pepper Steak

Ingredients

Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (2)
  • Beef – cut top sirloin or round steaks into 1/2 inch strips (some stores carry this already done for you and call it stir fry beef). Flank steak works but the beef will have a more stringy texture.
  • Bell peppers – one red and one green
  • White onion – sliced, though you can mince it if you have guest who don’t like big chunks of onions.
  • Water and beef bouillon cubes – mix hot water and bouillon cubes to start the base of the sauce.
  • Brown sugar – honey or white sugar work too.
  • Soy sauce – I use standard soy sauce in this recipe, not low sodium. Note that there is no table salt in this recipe so using regular soy sauce is important.
  • Worcestershire sauce – adds a touch of tang and layer of flavor to the sauce.
  • Cornstarch – this helps make the sauce thick and velvety.
  • Seasonings – ground ginger, garlic powder, black pepper and brown sugar
  • Red pepper flakes – This is optional if you like a spicy dish.
Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (3)

Step by Step Directions

Step 1 – In a small bowl, add the water and beef bouillon cubes. Microwave until hot, about 30 seconds.

Step 2 – Dissolve the beef bouillon into the water, do this by squishing the cubes with the back of a spoon.

Step 3 – Add the soy sauce, Worcestershire sauce, brown sugar, seasonings, and cornstarch. (Add red pepper flakes if you want your sauce spicy).

Step 4 – Whisk these ingredients until smooth. This may not seem like a lot of sauce, but the beef, onion, and peppers will create more sauce while cooking.

Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (4)

Step 5 – Add the sauce mixture to the slow cooker.

Step 6 – Add the beef strips on top of the sauce.

Step 7 – Next, add the onions.

Step 8 – Then add the bell pepper strips.

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How to serve and store Pepper Steak:

Serving ideas

So many different ways to serve this pepper steak over. Choose what your family enjoys most.

  • White rice
  • Brown rice
  • Spaghetti noodles
  • Steamed veggies
  • Quinoa

Storage tips

  • To store pepper steak, add to tupperware and refrigerate for up to 3 days.
  • To freeze, add to freezer ziplocks bags and squeeze out any exesss air. Freeze for up to 3 months.
Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (6)

Recipe FAQs

Can I make pepper steak as a freezer meal (before cooking)?

Yes, add the raw beef, onion, and peppers to a freezer ziplock bag. Mix up the sauce mixture, though let it cool before adding to the bag. Freeze for up to 3 months. Thaw in the fridge when ready to use, then add contents to the slow cooker and cook.

Can I add mushrooms to pepper steak?

You can add 1 cup of sliced mushrooms to pepper steak. Though the sauce may be a little watery due to how much moisture mushrooms have.

Can I use beef broth instead of bouillon?

You can if you are in a pinch. Though I use bouillon cubes and a small amount of water, so the sauce is potent. The meat and vegetables will let off their own moisture and dilute the concentrated sauce.

Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (7)

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Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (8)

Slow Cooker Pepper Steak

4.96 from 170 votes

Slow Cooker Pepper Steak has tender steak, bell peppers, onions in a Chinese inspired sauce.

Print Pin Rate

Course: Main Course

Cuisine: American

Prep Time: 15 minutes minutes

Cook Time: 5 hours hours

Total Time: 5 hours hours 15 minutes minutes

Servings: 6

Calories: 421kcal

Author: Sarah Olson

Ingredients:

  • 2 lbs. beef strips Look for beef cut into strips already or buy top sirloin and cut into 1/2 inch strips (round steak works well too).
  • 1 green bell pepper sliced thick
  • 1 red bell pepper sliced thick
  • 1 white onion sliced

For the sauce:

  • 1/2 cup water
  • 2 beef bouillon cubes
  • 3 Tbsp. soy sauce
  • 1 tsp. Worcestershire sauce
  • 1/4 tsp. ground ginger
  • 1/4 tsp. garlic powder
  • 1/2 tsp. black pepper
  • 2 tsp. brown sugar honey or white sugar work too
  • 1 Tbsp. cornstarch
  • 1/4 tsp. red pepper flakes (optional)

US CustomaryMetric

Instructions:

  • In a small microwavable bowl add the water and the beef bouillon cubes. Place in the microwave for 30 seconds, mix until dissolved. I use the back of a spoon or the tip of a whisk to break up the bouillon cubes. (If you don't have a microwave, boil your water on the stove-top).

  • Add the soy sauce, Worchestershire sauce, ginger, garlic powder, pepper, brown sugar and cornstarch to the bowl with the water and bouillon. Whisk until smooth. (Add the red pepper flakes if you desire). Pour this mixture into the slow cooker.

  • Add the beef, bell peppers and onions onto the sauce in the slow cooker.

  • Cover and cook on LOW for 5 hours.

How to Video:

Sarah’s Notes:

1 cup of sliced mushrooms can be added to this recipe. Though the sauce will be slightly thinner due to how much moisture mushrooms contain.

Cut the onion and bell pepper into thick slices so they will stay intact during the long cooking time it takes to get the beef tender.

Serve over white or brown rice, spaghetti noodles or quinoa. (Not calculated in the nutrition)

Refrigerate leftovers for up the 3 days or freeze for up to 3 months.

Can I use beef broth instead of bouillon cubes?

You can if you are in a pinch. Though I use bouillon cubes and a little amount of water so the sauce is potent. The meat and vegetables will let off their own moisture and dilute the concentrated sauce.

To make into a freezer dump meal:

Add the raw beef, onion and peppers to a freezer ziplock bag. Mix up sauce mixture, though let it cool before adding to the bag. Freeze for up to 3 months. Thaw in fridge when ready to use, then add contents to the slow cooker and cook according to recipe directions.

Nutrition Information:

Calories: 421kcal | Carbohydrates: 8g | Protein: 28g | Fat: 30g | Saturated Fat: 12g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 13g | Trans Fat: 2g | Cholesterol: 107mg | Sodium: 939mg | Potassium: 552mg | Fiber: 1g | Sugar: 4g | Vitamin A: 721IU | Vitamin C: 43mg | Calcium: 41mg | Iron: 3mg

Nutrition info is auto-generated. This information is an estimate; if you are on a special diet, please use your own calculations.

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Other great recipes like this one:

  • Slow Cooker Barbecue Chicken with Bell Peppers and Onions
  • Slow Cooker Sweet and Sour Ribs
  • Slow Cooker Sweet Chili Chicken
  • Slow Cooker Beef Tips
  • Slow Cooker Hawaiian Chicken
  • Slow Cooker Chicken Adobo
  • Slow Cooker Beef Chow Mein
  • Slow Cooker Ropa Vieja

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Slow Cooker Pepper Steak with Onion Recipe - The Magical Slow Cooker (2024)

FAQs

How much liquid do you put in a slow cooker for steak? ›

A beef joint in a crock-pot also needs about a ½ cup of liquid – beef broth is usually an excellent choice – to keep it tender and flavorful as it cooks. Place it on the lowest setting and only open it to add a small amount of liquid, if needed, and to stir your veggies.

Will raw onion cook in a slow cooker? ›

Onion - the One Ingredient You Must Pre-Cook Before Adding to Your Slow Cooker! Never add onions to a slow cooker dish that you haven't sautéed first – I find you get that slight raw onion flavour throughout and it just ruins the dish for me. I really think it's worth the extra effort.

When to add peppers to a slow cooker? ›

Put all of the slow cook ingredients (apart from the peppers) into the slow cooker and cook for 6 hours on HIGH or 8 hours on LOW. Add peppers about 30 minutes before the end of cooking.

What is pepper steak sauce made of? ›

One of my favourite steak sauces – a creamy Peppercorn Sauce made with brandy or cognac, beef broth, cream and plenty of crushed peppercorns. A steakhouse classic, this creamy pepper sauce with juicy steak is a match made in heaven.

Should meat be completely covered in liquid in slow cooker? ›

When cooking meat or poultry, the water or liquid level should cover the ingredients to ensure effective heat transfer throughout the crock. Some manufacturers of slow cookers recommend adding liquid to fill the stoneware 1/2 to 3/4 full.

How long does steak take in the slow cooker? ›

You can add more than one steak to the crock pot, but make sure they fit in a single layer. Cook on low for four to six hours, or until the internal temperature reaches your desired doneness (here's a steak temperature guide to help you with that).

How long to cook onion in onion cooker? ›

MICROWAVED: Using the Vidalia Brands® Microwave Onion Cooker, place prepped onion in the cooker and top with cover to seal. Microwave 5 minutes or until tender. Let sit 1 minute before serving.

Will onions cook in liquid? ›

Onions are almost always cooked in some kind of fat, although they can be softened in a small amount of liquid.

Why did my onions turn blue in slow cooker? ›

If you cook red onion with alkaline foods, such as nuts, lentils, and some vegetables, those anthocyanins revert to their blue hue. The same is true of red cabbage. To maintain the red hue, add a little acid, such as a splash of vinegar or a squeeze of lemon juice.

Do onions or peppers cook faster? ›

Cook for 1-2 minutes. Note we like to start cooking the pepper first (before the onion) because it takes longer for pepper to cook down to the same softness. Add the onion to the same pan and continue cooking for another 3-4 minutes until it's just starting to soften.

What vegetables should not be added to a slow cooker? ›

Tender vegetables

Vegetables such as peas, asparagus and peppers can become a flavorless, mushy mess in a slow cooker. Stick to heartier root vegetables like potatoes, onions, leeks and yams, or wait to add the tender vegetables until the last 30 minutes or so of cooking time.

How long do onions take to soften in a slow cooker? ›

Just slice up a bunch of onions. (You can use white, yellow, or red onions, or a combination of any of those.) Toss them with some melted butter. Then let them cook on low for about 12 hours total until they reach that perfectly caramelized, deep golden brown, sweet and savory perfection.

What is the best cut of meat to use for pepper steak? ›

Flank steak is our cut of choice for pepper steak—it's marbled with fat, full of beefy flavor, and easy to cut into thin, tender slices. That being said, flank isn't your only option. Skirt steak will give you a very similar result, or if you're looking for a cheaper choice, sirloin is another great option.

Why is my pepper steak tough? ›

Many butchers cut their pepper steak from different parts of the steer. Depending on where the pepper steak is cut from, it can be very tender or it can be very tough. Many people assume that it is the way they are cooking it, but it has to do with the quality of the meat and where it is cut from.

What is another name for pepper steak? ›

Steak au poivre (French pronunciation: [stɛk‿o pwavʁ], Quebec French pronunciation: [stei̯k‿o pwɑːvʁ]) or pepper steak is a French dish that consists of a steak, traditionally a filet mignon, coated with coarsely cracked peppercorns.

How much liquid per pound of meat in slow cooker? ›

Add about 1/4 Cup Liquid Per Pound of Pork

Aromatics aside, the actual liquid you put in the crock pot is what will flavor the pork the most.

How much water is needed for steak? ›

It takes approximately 1,847 gallons of water to produce 1 pound of beef — that's enough water to fill 39 bathtubs all the way to the top.

Do you put water in the bottom of a slow cooker? ›

Never ever put liquid into the base of a slow cooker. It was not designed for that and clearly states not to immerse the base in water. The heating element and components are not in a waterproof environment. You will quickly ruin the heating element and risk injury from electrical leakage into the metal base.

Can you overcook steak in a slow cooker? ›

If you cook meat at too high of a temperature in your slow cooker, you're likely to overcook it. When you cook your food slowly at a lower temperature, you unlock the magic of slow cooking.

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