Slow Cooker Pepper Steak

If you’re craving a takeout favorite but want the ease of a homemade meal, this Slow Cooker Pepper Steak is the perfect solution. Tender strips of beef sirloin simmer with bell peppers, onions, and a savory sauce until melt-in-your-mouth delicious. It’s hearty, comforting, and packed with flavor — all with minimal hands-on time.

Serve with rice or Slow Cooker Mashed Potatoes.

Why You’ll Love This Recipe

• Takeout-Style, At Home – Tastes just like your favorite restaurant version but made right in your kitchen.
• Hands-Off Cooking – You can give the steak a quick sear, but this can be a total hands off, dump and go recipe, the slow cooker does the work for you.
• Tender & Flavorful Beef – Sirloin cooks low and slow, soaking up a rich soy-tomato broth.
• Perfect for Meal Prep – Reheats well and makes a great make-ahead dinner.

What You Need

• Beef Sirloin – Thinly sliced for quick searing and tender results.
• Garlic Powder – Adds depth and flavor.
• Vegetable Oil – Helps caramelize the beef.
• Beef Broth, Soy Sauce & Cornstarch – Create a savory, glossy sauce that coats every bite.
• Sugar & Salt – Balance the flavors.
• Stewed Tomatoes – Bring in a touch of sweetness and richness.
• Onion & Bell Peppers – Classic pairings that give this dish its signature flavor and texture.

How to Make Slow Cooker Pepper Steak

1. Prep the Beef – Slice sirloin into thin strips and season with garlic powder.
2. Sear the Meat – Heat vegetable oil in a skillet and sear beef for about 3 minutes per side, until browned.
3. Mix the Sauce – In the slow cooker, whisk together beef broth, soy sauce, sugar, garlic powder, salt, and cornstarch.
4. Load the Crock – Add beef, stewed tomatoes (with liquid), sliced onion, and bell peppers. Add fresh ground pepper. 
5. Cook Low + Slow – Cover and cook on High for 3–4 hours or Low for 6–8 hours until beef is tender and veggies are soft.
6. Serve & Enjoy – Spoon over rice, noodles, or mashed potatoes for a complete meal.

Tips & Tricks

• Slice Against the Grain – This keeps beef tender, even after long cooking.
• Sear For Deeper Flavor – Browning the beef locks in flavor and gives a richer taste. But if you are in a hurry, you can skip it. 
• Adjust the Veggies – You can add red or yellow bell peppers for color and sweetness.
• Make It Spicy – Stir in red pepper flakes, sriracha, or a sliced jalapeño for a kick.
• Thicken the Sauce – If you want a thicker sauce, mix an extra teaspoon of cornstarch with water and stir in during the last 30 minutes of cooking.

Substitutions & Variations

• Beef – Try flank steak or chuck roast if you don’t have sirloin.
• Soy Sauce – Use tamari or coconut aminos for a gluten-free option.
• Stewed Tomatoes – Swap with fire-roasted diced tomatoes for a smokier flavor.
• Vegetables – Mushrooms, zucchini, or broccoli make tasty add-ins.
• Low-Carb Option – Serve over cauliflower rice or zucchini noodles.

Serving Suggestions

This pepper steak is hearty enough on its own but really shines when served over fluffy white rice, egg noodles, or mashed potatoes to soak up that savory sauce. Garnish with green onions or sesame seeds for an extra pop of flavor.

Other Great Slow Cooker Recipes

• Bolognese Slow Cooker
• Black Eyed Peas (Slow Cooker)
• Chicken Carnitas (Instant Pot and Slow Cooker)
• Slow Cooker Korean Beef
• Slow Cooker Corn Chowder
• Slow Cooker Breakfast Strata

Slow Cooker Pepper Steak

Juicy strips of beef are slow-cooked with bell peppers and onions in a rich, flavorful sauce

No ratings yet

Print Pin Rate

Course: Main

Cuisine: American

Keyword: pepper steak, sirloin steak, slow cooker pepper steak

Prep Time: 10 minutes minutes

Cook Time: 6 hours hours

Total Time: 6 hours hours 10 minutes minutes

Servings: 6

Calories: 230kcal

Equipment

• 1 slow cooker

Ingredients

• 2 pounds beef sirloin cut into thin strips
• ¾ teaspoon garlic powder
• ½ cup beef broth
• 3 tablespoons soy sauce
• 1 teaspoon white sugar
• 1 teaspoon salt
• 1 tablespoon cornstarch
• 14.5 ounces stewed tomatoes with liquid
• ½ yellow onion sliced
• 2 large green bell peppers sliced
• Pepper to taste

Instructions

• Thinly slice beef, peppers, and onions
• Add beef broth, soy sauce, garlic powder, sugar, salt, and cornstarch to the crock, and whisk together.
• Add in stewed tomatoes, onions, peppers, and beef.
• Stir well to mix everything up.
• Cover, and cook on High for 3 to 4 hours, or on Low for 6 to 8 hours.

Nutrition

Calories: 230kcal | Carbohydrates: 10g | Protein: 35g | Fat: 5g | Saturated Fat: 2g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 2g | Cholesterol: 83mg | Sodium: 1206mg | Potassium: 769mg | Fiber: 2g | Sugar: 5g | Vitamin A: 265IU | Vitamin C: 38mg | Calcium: 63mg | Iron: 4mg

Our recipe card software calculates these nutrition facts based on averages for the above ingredients, different brands, and quality of produce/meats may have different nutritional information, always calculate your own based on the specific products you use in order to achieve accurate macros for this recipe.

Tried this recipe?Mention @ezpzmealz or tag #ezpzmealz!

Want to use this recipe in a meal plan?Try PrePear, my FREE Meal Planning App that allows you to save your recipes, plan meals, shop for groceries, and cook simply in one place. Join Here!