If you’re looking for a fuss-free dinner that delivers rich flavor and hearty satisfaction, this Slow Cooker Pepper Steak is a perfect choice. With tender beef, sweet bell peppers, and a velvety, savory sauce, it’s a wholesome meal that practically cooks itself. Whether you’re juggling work, errands, or simply want something cozy, this dish offers comfort without the kitchen chaos. Serve it over fluffy rice, buttery mashed potatoes, or warm noodles for a complete meal that feels like a hug in a bowl.
Table of Contents
Why You’ll Love This Recipe
- Deep and balanced flavor: Searing the beef adds depth, while the slow simmer develops the sauce naturally.
- Minimal hands-on time: Prep it quickly, then let the slow cooker handle the rest.
- Family-approved and customizable: Works well with various sides and simple ingredient swaps.
Ingredients You’ll Need
Beef Sirloin (2 pounds, cut into strips)
Sirloin holds up well in long, slow cooking. It softens beautifully while maintaining a satisfying bite.
Garlic Cloves (2–3, sliced)
Adding sliced garlic builds a savory foundation without overwhelming the sauce.
Olive Oil (3 tablespoons)
Used to brown the beef before slow cooking, enhancing taste and sealing in juices.
Montreal Steak Seasoning (2 tablespoons)
A convenient spice mix that brings bold, smoky notes and simplifies prep.
Water (¼ cup) + Cornstarch (2 tablespoons)
Mixed to form a slurry, this duo thickens the sauce naturally while it cooks.
Beef Broth (½ cup)
Adds body and umami richness to the dish, keeping it moist and flavorful.
Onion (½, sliced)
Aromatics like onion mellow out during cooking and blend into the sauce.
Red Bell Peppers (2 large, sliced)
These peppers soften into the sauce while keeping their sweetness and vibrant color.
Ripe Tomatoes (3 medium, cubed)
As they cook, tomatoes break down into the sauce, adding acidity and depth.
Soy Sauce (3 tablespoons)
Brings saltiness and a layer of umami that ties all the flavors together.
White Sugar (1 teaspoon)
A small amount of sugar balances the sauce, rounding out its savory profile.
Salt and Pepper (to taste)
Add these at the end to perfect the seasoning, as soy sauce and broth already contribute saltiness.
How to Make Slow Cooker Pepper Steak
This meal starts with a quick browning step that creates flavor-packed crusts on the beef. From there, the rest is simple. Toss everything in your slow cooker, turn it on, and let it do the work. As the hours pass, the meat becomes tender, and the sauce thickens into a comforting gravy packed with peppers, garlic, and tomatoes.
Whether you’re feeding a family or prepping meals for the week, this dish fits right in.
Step-by-Step Instructions
1. Prep and Season the Meat
Trim any fat from the sirloin and sprinkle both sides with steak seasoning.
2. Sear the Beef Strips
In a skillet over medium heat, warm the olive oil and sear the beef on both sides until golden and slightly crisp.
3. Place in the Slow Cooker
After searing, transfer the beef strips to the bottom of the slow cooker.
4. Mix the Thickener
Whisk cornstarch with water until dissolved, then pour the mixture over the meat.
5. Add Vegetables and Broth
Layer onions, red peppers, and tomatoes over the beef. Pour in the broth for moisture.
6. Add Final Seasonings
Drizzle in soy sauce and sprinkle with sugar. Season lightly with salt and pepper, keeping in mind the saltiness of the broth and soy sauce.
7. Cook Low and Slow
Cover and cook on high for 3–4 hours or low for 6–8 hours. Stir gently midway through if you’d like.
8. Serve Hot
Once the beef is fork-tender and the sauce thickened, spoon it over your favorite side and enjoy.
Helpful Tips
- Browning matters. A quick sear at the start enhances flavor significantly.
- Skillet choice: Use a heavy or cast iron pan for the best browning.
- Add peppers late: If you prefer them slightly crisp, add during the final 45 minutes.
- Boost the sauce: Want more gravy? Double the broth and cornstarch mixture.
- Storage: Keep leftovers in a sealed container in the fridge and reheat gently.
Details
Flavor: Rich, savory, and slightly sweet with umami depth
Texture: Melt-in-your-mouth beef with tender vegetables and smooth sauce
Occasion: Great for quick weeknights, meal prep, or casual family meals
Prep Time: 20 minutes
Cook Time: 4 hours (High) or 6–8 hours (Low)
Notes
Feel free to adjust the vegetables or protein. Green or yellow bell peppers can be used if you want a sharper or milder flavor. Swap beef sirloin with top round or flank steak if that’s what you have. Want some spice? Add crushed red pepper or sliced chili. To keep it gluten-free, use tamari instead of soy sauce.
Nutritional Information (Per Serving)
| Nutrient | Amount |
|---|---|
| Calories | 275 kcal |
| Carbohydrates | 6 g |
| Protein | 34 g |
| Fat | 12 g |
| Saturated Fat | 3 g |
| Sugar | 1 g |
| Sodium | 667 mg |
| Potassium | 566 mg |
| Fiber | 1 g |
| Vitamin A | 35 IU |
| Vitamin C | 1 mg |
| Calcium | 51 mg |
| Iron | 3 mg |
Frequently Asked Questions (FAQ)
What’s the best beef cut for this recipe?
Sirloin is a great choice because it gets tender without falling apart. Flank steak or top round also work well if sliced thin.
Do I have to sear the beef first?
It’s highly recommended. Searing creates richer flavor and helps lock in juices.
How can I keep the peppers from becoming too soft?
Add the sliced bell peppers during the last 30 to 45 minutes of cooking if you want a firmer texture.
Can I make this ahead of time?
Yes. This dish reheats very well and tastes even better the next day. Store in the refrigerator for up to 3 days.
Storage Instructions
Let the pepper steak cool to room temperature, then store it in an airtight container in the fridge for up to three days. To freeze, portion into freezer-safe containers and keep for up to two months. Defrost in the fridge overnight and reheat in the microwave or on the stovetop until hot. Add a splash of broth if the sauce has thickened too much.
Print
Slow Cooker Pepper Steak | Easy Weeknight Favorite
- Total Time: 4 hours 30 minutes
- Yield: 6 servings 1x
Description
Juicy steak strips simmered with peppers, onions, and tomatoes in a savory, thick sauce made right in your slow cooker. A comforting dinner that’s incredibly easy to prepare.
Ingredients
2 pounds beef sirloin, cut into 2-inch strips
2–3 garlic cloves, sliced
3 tablespoons olive oil
2 tablespoons Montreal steak seasoning
¼ cup water
½ cup beef broth
2 tablespoons cornstarch
½ onion, sliced
2 red bell peppers, sliced
3 ripe tomatoes, cubed
3 tablespoons soy sauce
1 teaspoon white sugar
Salt and pepper to taste
Instructions
1. Trim fat from the beef and season with steak seasoning.
2. Heat olive oil in a skillet and sear the beef on both sides until browned.
3. Transfer seared beef to the slow cooker.
4. Whisk water with cornstarch and pour over beef.
5. Add sliced onions, peppers, and tomatoes.
6. Pour in beef broth, soy sauce, sugar, and season lightly with salt and pepper.
7. Cover and cook on High for 3–4 hours or Low for 6–8 hours until beef is tender.
8. Serve warm over rice, noodles, or mashed potatoes.
Notes
Store leftovers in a sealed container for up to 3 days.
Add peppers later during cooking if you prefer more texture.
Substitute beef cuts if needed, such as flank or top round.
- Prep Time: 20 minutes
- Cook Time: 4 hours 10 minutes
- Category: Dinner, Slow Cooker
- Method: Slow Cook
- Cuisine: American
Nutrition
- Serving Size: 1
- Calories: 275
- Sugar: 1
- Sodium: 667
- Fat: 12
- Saturated Fat: 3
- Unsaturated Fat: 9
- Trans Fat: 0
- Carbohydrates: 6
- Fiber: 1
- Protein: 34
- Cholesterol: 83
Conclusion
Slow Cooker Pepper Steak is the perfect mix of convenience and comfort. It uses simple ingredients, takes minimal prep, and creates a meal full of rich flavor and satisfying texture. With its hearty sauce and tender beef, it’s a recipe you’ll come back to again and again, whether you’re cooking for one, a hungry family, or prepping for the week ahead.