Slow Cooker Pepper Steak

Slow Cooker Pepper Steak is a comforting, flavorful dish made with tender strips of beef, colorful bell peppers, onions, and a savory garlic-soy sauce. Cooking it slowly allows the beef to become incredibly tender while the sauce thickens into a rich, glossy gravy that coats every bite.

This recipe is perfect for busy days when you want a homemade meal without spending hours in the kitchen. Simply add the ingredients to your slow cooker, let them simmer slowly, and come back to a delicious meal ready to serve over rice, noodles, or mashed potatoes.

Pepper steak is inspired by Asian-style stir-fry dishes but adapted for the convenience of the slow cooker. The result is deep flavor, tender beef, and a hearty meal that the whole family will love.

Why You’ll Love This Recipe

There are many reasons this slow cooker pepper steak recipe is so popular.

Easy preparation – Only about 15 minutes of prep time.
Tender beef – Slow cooking breaks down tougher cuts of meat.
Rich savory sauce – Garlic, soy sauce, and beef broth create a bold flavor.
Family-friendly meal – Perfect served over rice or noodles.
Meal prep friendly – Stores and reheats well for leftovers.

Recipe Overview

Prep Time: 15 minutes
Cook Time: 6–8 hours (low) or 3–4 hours (high)
Total Time: About 6–8 hours

Yield: 4–6 servings

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Ingredients

• 1½ pounds beef sirloin or flank steak, thinly sliced
• 2 large bell peppers (red or green), sliced
• 1 medium onion, sliced
• 3 cloves garlic, minced
• 1 cup beef broth
• ¼ cup soy sauce
• 2 tablespoons brown sugar
• 1 tablespoon Worcestershire sauce
• 1 teaspoon ground ginger
• ½ teaspoon black pepper
• 2 tablespoons cornstarch
• 2 tablespoons water

Optional garnish:

• sliced green onions
• sesame seeds

Equipment Needed

• Slow cooker (crockpot)
• Knife and cutting board
• Mixing bowl
• Measuring cups and spoons

Step-by-Step Instructions

Step 1: Prepare the Beef

Slice the beef into thin strips against the grain. Cutting against the grain helps keep the meat tender during cooking.

Place the beef into the slow cooker.

Step 2: Add the Vegetables

Add the sliced bell peppers and onions on top of the beef.

Bell peppers add color, natural sweetness, and a slight crunch that balances the rich sauce.

Step 3: Prepare the Sauce

In a bowl whisk together:

• beef broth
• soy sauce
• brown sugar
• Worcestershire sauce
• minced garlic
• ground ginger
• black pepper

Mix well until the sugar dissolves.

Step 4: Combine Everything

Pour the sauce mixture over the beef and vegetables in the slow cooker.

Stir gently so the meat is coated with the sauce.

Step 5: Slow Cook

Cover the slow cooker with the lid and cook:

Low setting: 6–8 hours
or
High setting: 3–4 hours

The beef should become very tender and absorb the savory flavors of the sauce.

Step 6: Thicken the Sauce

About 20 minutes before serving, mix the cornstarch with water in a small bowl to create a slurry.

Stir the slurry into the slow cooker.

Cover and cook for another 15–20 minutes until the sauce thickens into a rich gravy.

Step 7: Serve

Taste and adjust seasoning if needed.

Serve the pepper steak hot over:

• steamed white rice
• brown rice
• egg noodles
• mashed potatoes

Garnish with green onions or sesame seeds for extra flavor.

Best Beef Cuts for Pepper Steak

Several cuts of beef work well in this recipe.

Flank steak – classic choice with strong flavor.
Sirloin steak – tender and lean.
Round steak – economical and great for slow cooking.
Chuck steak – becomes extremely tender when cooked slowly.

If using tougher cuts, slicing thinly and cooking longer helps create tender results.

Tips for Perfect Slow Cooker Pepper Steak

Slice the Meat Thin

Thin slices cook evenly and absorb the sauce better.

Don’t Overcook

Cooking too long on high heat can make the peppers overly soft.

Add Peppers Later (Optional)

For slightly crisp peppers, add them during the last hour of cooking.

Use Low Sodium Soy Sauce

This helps control the saltiness of the dish.

Add Extra Vegetables

You can include mushrooms, carrots, or snap peas for more texture and nutrition.

Flavor Variations

This dish is easy to customize based on your preferences.

Spicy Pepper Steak

Add:

• ½ teaspoon red pepper flakes
• or sliced fresh chili peppers

Garlic Lover’s Version

Double the garlic for deeper flavor.

Sweet and Savory

Add 1 tablespoon honey for a slightly sweeter sauce.

Asian-Style Version

Add:

• 1 teaspoon sesame oil
• 1 tablespoon hoisin sauce

What to Serve with Pepper Steak

Pepper steak pairs well with many sides.

Rice – classic and absorbs the flavorful sauce.
Egg noodles – perfect for a comforting meal.
Fried rice – adds extra flavor.
Steamed vegetables – broccoli or green beans work well.
Garlic bread – great for soaking up the sauce.

Storage and Reheating

Refrigerator

Store leftovers in an airtight container for 3–4 days.

Freezer

Freeze for up to 3 months.

Allow to cool completely before freezing.

Reheating

Reheat gently on the stove or microwave until heated through.

Add a splash of broth if the sauce becomes too thick.

Nutrition Information (Per Serving)

Approximate values based on 6 servings

Calories: 310
Protein: 30 g
Carbohydrates: 12 g
Fat: 16 g
Fiber: 2 g
Sugar: 6 g
Sodium: 620 mg

Values may vary depending on ingredients used.

Why Slow Cooking Works So Well

Slow cooking is ideal for dishes like pepper steak because the low heat gradually breaks down the connective tissue in the meat.

This results in:

• incredibly tender beef
• deeper flavor development
• rich, well-blended sauce

The slow cooker also allows all ingredients to simmer together, creating a comforting, hearty meal with minimal effort.