Introduction
This Stuffed Pepper Casserole delivers all the comforting flavors of classic stuffed peppers in an easy one-pan meal. Tender bell peppers, seasoned lean ground beef, cauliflower rice, savory tomato sauce, and gooey melted cheese come together in every bite for a hearty, satisfying dinner. It’s rich, cheesy, and packed with wholesome ingredients that make weeknight cooking simple.
Naturally high in protein and low in carbs, this casserole is perfect for anyone looking for a healthier comfort food option. Whether you’re meal prepping for the week or serving a family dinner, this dish offers plenty of flavor without the extra carbohydrates found in traditional stuffed pepper recipes.
Can This Stuffed Pepper Casserole Support Weight Loss Goals?
Yes. This casserole replaces traditional rice with cauliflower rice, reducing the carbohydrate content while adding fiber and nutrients. Lean ground beef and cheese provide plenty of protein, helping you stay satisfied for longer. As part of a balanced eating plan and appropriate portion sizes, this recipe can be a filling alternative to higher-calorie casseroles without sacrificing flavor.
Does Stuffed Pepper Casserole Fit a High-Protein Lifestyle?
Absolutely. Lean ground beef, mozzarella, and cheddar cheese provide a generous amount of protein while cauliflower rice keeps net carbs significantly lower than traditional rice. Bell peppers contribute fiber, vitamins, and natural sweetness without adding excessive carbohydrates. The result is a balanced, protein-rich meal that’s ideal for high-protein and lower-carb lifestyles.
Why This Recipe is Special
- High in protein and naturally low in carbohydrates.
- One-pan meal that’s easy to prepare and clean up.
- All the flavors of classic stuffed peppers in casserole form.
- Great for meal prep and freezer-friendly.
- Family-friendly comfort food made healthier.
My Personal Experience
- This casserole has become one of my favorite meal-prep dinners.
It reheats beautifully while keeping the peppers tender and flavorful. - Cauliflower rice blends in surprisingly well.
It absorbs the savory sauce and seasonings without overpowering the dish. - Using two cheeses creates the best texture.
Mozzarella provides a creamy melt while cheddar adds rich flavor. - The leftovers taste even better the next day.
The seasonings have more time to blend, making every bite even more delicious.
Perfect For
This casserole is perfect for busy weeknight dinners, family meals, meal prep lunches, freezer meals, potlucks, comfort food cravings, high-protein eating plans, low-carb lifestyles, and cozy fall or winter dinners. It also pairs well with a fresh green salad or roasted vegetables.
Why You’ll Love This Recipe
- Easy one-pan dinner.
Everything cooks together for less cleanup and maximum flavor. - Packed with protein.
Lean beef and cheese make every serving filling and satisfying. - Classic comfort food with fewer carbs.
Cauliflower rice replaces traditional rice without sacrificing texture. - Perfect for leftovers.
It stores and reheats well for quick lunches throughout the week. - Simple everyday ingredients.
Everything is easy to find at your local grocery store.
Common Mistakes to Avoid
- Not draining excess grease from the ground beef before adding the sauce.
- Overcooking the bell peppers until they become mushy.
- Using frozen cauliflower rice without cooking off excess moisture.
- Adding the cheese too early, causing it to overbrown before the casserole is heated through.
Required Equipment
- Large skillet — Browns the beef evenly while building flavor.
- 9×13-inch casserole dish — Ensures even baking and generous servings.
- Wooden spoon — Breaks up the meat while mixing ingredients thoroughly.
- Chef’s knife — Quickly chops the peppers and onion.
- Measuring cups and spoons — Helps maintain consistent seasoning and ingredient ratios.
Storage Instructions
Allow the casserole to cool completely before storing. Place leftovers in an airtight container and refrigerate for up to 4 days. For longer storage, portion into freezer-safe containers and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating in a 350°F (175°C) oven for 15–20 minutes or microwave individual servings until hot.
Recipe Details
Preparation Time: 15 minutes
Cooking Time: 35 minutes
Total Time: 50 minutes
Servings: 6
Best Season for This Recipe: All Season
Total Calories (Per Serving): Approximately 315 calories
Description
This Stuffed Pepper Casserole combines lean ground beef, colorful bell peppers, cauliflower rice, and melted cheese into one comforting, protein-packed meal. It’s low in carbs, easy to prepare, and perfect for busy weeknights or meal prep. Every bite delivers the classic taste of stuffed peppers in a simple casserole form.
📝 Ingredients
- 1 pound (450 g) lean ground beef (90–93% lean)
- 1 tablespoon olive oil
- 3 medium bell peppers (red, yellow, or green), diced
- 1 medium onion, diced
- 3 cloves garlic, minced
- 3 cups cauliflower rice (fresh or frozen; thaw and drain if frozen)
- 1 can (14.5 oz) diced tomatoes, drained
- 1 cup no-sugar-added tomato sauce
- 1 tablespoon tomato paste
- 1 teaspoon Italian seasoning
- 1 teaspoon smoked paprika
- ½ teaspoon onion powder
- ½ teaspoon salt
- ¼ teaspoon black pepper
- 1½ cups part-skim shredded mozzarella cheese
- ½ cup reduced-fat shredded cheddar cheese
- 2 tablespoons chopped fresh parsley (optional garnish)
Directions
- Preheat the oven to 375°F (190°C).
- Brown the beef (Medium-High Heat | 6–8 minutes).
Heat olive oil in a large skillet. Cook the ground beef until browned, breaking it into small crumbles. Drain excess grease if necessary. - Cook the vegetables (Medium Heat | 5–6 minutes).
Add diced onion and bell peppers, cooking until slightly softened. Stir in the garlic and cook for 30 seconds until fragrant. - Add the cauliflower rice (Medium Heat | 4–5 minutes).
Stir in the cauliflower rice and cook until excess moisture evaporates and the mixture looks lightly dry. - Build the sauce (Medium-Low Heat | 3–4 minutes).
Mix in diced tomatoes, tomato sauce, tomato paste, Italian seasoning, smoked paprika, onion powder, salt, and pepper. Simmer until slightly thickened. - Assemble the casserole.
Transfer the mixture to a 9×13-inch baking dish. Stir in half of the mozzarella, then sprinkle the remaining mozzarella and cheddar evenly over the top. - Bake (375°F | 15–18 minutes).
Bake until the cheese is fully melted, bubbly, and lightly golden around the edges. - Rest and serve (5 minutes).
Let the casserole rest before serving. Garnish with chopped parsley if desired.
High-Protein Cooking Tips
- Choose lean ground beef or lean ground turkey to increase protein while reducing excess fat.
- Cook off moisture from the cauliflower rice before combining with the sauce to avoid a watery casserole.
- Freshly grate the cheese for better melting and texture.
- Add a spoonful of plain Greek yogurt on top before serving for an extra protein boost.
Nutrition Facts (Per Serving – Approximate)
- Calories: 315
- Fats: 18g
- Cholesterol: 72mg
- Sodium: 510mg
- Potassium: 720mg
- Total Carbohydrates: 12g
- Fiber: 4g
- Net Carbs: 8g
- Sugars: 7g
- Protein: 28g
- Calcium: 260mg
Notes
- Refrigerate leftovers within 2 hours for the best freshness.
- Reheat in the microwave or oven until the center reaches a safe serving temperature.
- Contains dairy; use your favorite dairy-free shredded cheese if needed.
- Ground turkey or ground chicken can be substituted for lean beef.
- Add crushed red pepper flakes or diced jalapeños for a spicy variation.
- Sprinkle fresh basil or parsley on top before serving for extra freshness.
Frequently Asked Questions
1. Can I make this casserole ahead of time?
Yes, assemble it up to 24 hours in advance, refrigerate, and bake when ready to serve.
2. Can I freeze Stuffed Pepper Casserole?
Yes, cool it completely, wrap it well, and freeze for up to 3 months.
3. Can I use regular rice instead of cauliflower rice?
Yes, but it will increase the carbohydrate content and slightly change the nutrition.
4. What’s the best cheese for this casserole?
Mozzarella and cheddar provide the best combination of creamy melt and rich flavor.
5. Is this recipe keto-friendly?
Yes, the use of cauliflower rice keeps the net carbs low enough to fit many keto and low-carb meal plans.
6. How do I keep the casserole from becoming watery?
Cook the cauliflower rice until excess moisture evaporates and drain canned tomatoes thoroughly before adding them.
