Stuffed Pepper Casserole – A Cozy, One-Pan Weeknight Favorite

This stuffed pepper casserole takes everything you love about classic stuffed peppers and turns it into an easy, family-friendly bake. No fussing with hollowed peppers or long prep—just comforting flavors, tender rice, and melty cheese. It’s simple to make, budget-friendly, and great for leftovers.

Whether you’re feeding a crowd or stocking your freezer, this dish delivers big flavor with minimal effort.

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Stuffed Pepper Casserole – A Cozy, One-Pan Weeknight Favorite

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Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 servings

Ingredients
Method

Ingredients

  

• 1 pound (450 g) ground beef (or turkey)
• 1 cup uncooked long-grain rice (white or parboiled; see notes for brown)
• 3 bell peppers, diced (mix of red, yellow, and green for color)
• 1 medium onion, diced
• 3 cloves garlic, minced
• 1 can (14.5 oz/410 g) diced tomatoes
• 1 can (8 oz/227 g) tomato sauce
• 2 cups beef or chicken broth (low-sodium preferred)
• 1 tablespoon tomato paste (optional, for depth)
• 1 teaspoon Italian seasoning
• 1 teaspoon smoked paprika (or regular paprika)
• 1 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• 1 cup shredded cheese (mozzarella, Monterey Jack, or cheddar blend)
• 2 tablespoons olive oil
• Fresh parsley or basil, chopped (for garnish)

Method

 

1. Preheat and prep. Set your oven to 375°F (190°C). Lightly oil a 9×13-inch baking dish or a large oven-safe skillet.
2. Sauté the aromatics. Heat olive oil in a large skillet over medium heat. Add onion and bell peppers.

   Cook 5–7 minutes until softened. Stir in garlic and cook 30 seconds until fragrant.

3. Brown the meat. Add ground beef to the skillet. Break it up with a spatula and cook until no longer pink, 5–6 minutes.

   Drain excess fat if needed.

4. Season and build the sauce. Stir in Italian seasoning, smoked paprika, salt, and pepper. Add tomato paste, diced tomatoes (with juices), and tomato sauce. Mix well.
5. Add rice and broth. Stir in uncooked rice and broth.

   Bring to a gentle simmer. Taste the liquid and adjust salt if needed—it should be well-seasoned, since the rice absorbs flavor.

6. Transfer and bake. Pour mixture into your prepared baking dish if not using an oven-safe skillet. Cover tightly with foil and bake 30–35 minutes, until rice is tender and liquid is mostly absorbed.
7. Add cheese. Remove foil, sprinkle cheese evenly over the top, and bake uncovered 5–10 minutes, until melted and bubbly.
8. Rest and garnish. Let the casserole rest 10 minutes to set.

   Sprinkle with chopped parsley or basil before serving.

Why This Recipe Works

This casserole keeps the spirit of stuffed peppers—sweet bell peppers, savory beef, tomatoes, and rice—without the extra steps. Cooking it all in one pan means the flavors meld together, and the rice absorbs all that tasty sauce. The texture stays tender and hearty, while the cheese on top adds a satisfying finish.

It’s adaptable, forgiving, and perfect for weeknights when you want comfort without complications.

What You’ll Need

• 1 pound (450 g) ground beef (or turkey)
• 1 cup uncooked long-grain rice (white or parboiled; see notes for brown)
• 3 bell peppers, diced (mix of red, yellow, and green for color)
• 1 medium onion, diced
• 3 cloves garlic, minced
• 1 can (14.5 oz/410 g) diced tomatoes
• 1 can (8 oz/227 g) tomato sauce
• 2 cups beef or chicken broth (low-sodium preferred)
• 1 tablespoon tomato paste (optional, for depth)
• 1 teaspoon Italian seasoning
• 1 teaspoon smoked paprika (or regular paprika)
• 1 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• 1 cup shredded cheese (mozzarella, Monterey Jack, or cheddar blend)
• 2 tablespoons olive oil
• Fresh parsley or basil, chopped (for garnish)

Step-by-Step Instructions

1. Preheat and prep. Set your oven to 375°F (190°C). Lightly oil a 9×13-inch baking dish or a large oven-safe skillet.
2. Sauté the aromatics. Heat olive oil in a large skillet over medium heat. Add onion and bell peppers.

   Cook 5–7 minutes until softened. Stir in garlic and cook 30 seconds until fragrant.

3. Brown the meat. Add ground beef to the skillet. Break it up with a spatula and cook until no longer pink, 5–6 minutes.

   Drain excess fat if needed.

4. Season and build the sauce. Stir in Italian seasoning, smoked paprika, salt, and pepper. Add tomato paste, diced tomatoes (with juices), and tomato sauce. Mix well.
5. Add rice and broth. Stir in uncooked rice and broth.

   Bring to a gentle simmer. Taste the liquid and adjust salt if needed—it should be well-seasoned, since the rice absorbs flavor.

6. Transfer and bake. Pour mixture into your prepared baking dish if not using an oven-safe skillet. Cover tightly with foil and bake 30–35 minutes, until rice is tender and liquid is mostly absorbed.
7. Add cheese. Remove foil, sprinkle cheese evenly over the top, and bake uncovered 5–10 minutes, until melted and bubbly.
8. Rest and garnish. Let the casserole rest 10 minutes to set.

   Sprinkle with chopped parsley or basil before serving.

Keeping It Fresh

Store leftovers in an airtight container in the fridge for up to 4 days. Reheat gently in the microwave with a splash of broth or water to keep the rice moist. For freezing, cool completely, portion into freezer-safe containers, and freeze for up to 3 months.

Thaw overnight in the fridge and reheat covered at 325°F (165°C) until warmed through.

Why This is Good for You

This casserole balances protein, complex carbs, and vegetables in every scoop. Bell peppers are rich in vitamin C and antioxidants, while tomatoes bring potassium and lycopene. Using lean beef or ground turkey trims saturated fat without sacrificing flavor.

You can boost fiber by swapping in brown rice or adding extra veggies like spinach or mushrooms.

Pitfalls to Watch Out For

• Undercooked rice: If you peek and it’s still firm, add 1/4 cup hot broth, cover, and bake 5–10 minutes more.
• Dry casserole: Overbaking can evaporate too much liquid. Keep it covered for most of the bake to lock in moisture.
• Bland flavor: Season the mixture before baking. The rice dulls seasoning, so the sauce should taste slightly salty and bold.
• Greasy texture: Drain excess fat after browning beef, especially if using a higher-fat grind.
• Soggy peppers: If you prefer a little bite, sauté peppers just until crisp-tender before baking, not fully soft.

Variations You Can Try

• Turkey or chicken: Use ground turkey or chicken for a lighter option.

  Add a splash of Worcestershire or soy sauce for savory depth.

• Brown rice: Swap in 1 cup uncooked brown rice and increase broth to 2 1/2 cups. Bake covered 55–65 minutes, checking for tenderness.
• Tex-Mex twist: Add 1 teaspoon chili powder, 1/2 teaspoon cumin, and a can of black beans (drained). Top with pepper jack.
• Veggie-forward: Stir in chopped spinach, zucchini, or mushrooms with the peppers.

  Add 1–2 tablespoons extra broth if needed.

• Low-carb: Replace rice with 4 cups riced cauliflower. Reduce broth to 1/2 cup. Bake 20–25 minutes until tender.
• Dairy-free: Skip cheese or use a non-dairy melt.

  Add nutritional yeast for a savory boost.

• Greek-inspired: Season with oregano and garlic, add olives, and finish with crumbled feta instead of melting cheese.

FAQ

Can I make this ahead?

Yes. Assemble through step 5, cool, cover, and refrigerate up to 24 hours. Add 5–10 extra minutes to the baking time since it starts cold.

What if I only have minute rice?

Use 1 cup minute rice and reduce the broth to about 1 1/4 cups.

Stir the rice in after the sauce simmers, then bake covered for just 15–20 minutes before adding cheese.

How do I keep the rice from getting mushy?

Use long-grain white or parboiled rice, measure liquid accurately, and avoid overbaking. Let it rest after baking so excess moisture redistributes.

Can I make it spicier?

Absolutely. Add red pepper flakes, a diced jalapeño with the peppers, or use a spicy cheese like pepper jack.

You can also add a splash of hot sauce to the sauce.

What cheese works best?

Mild, melty cheeses like mozzarella or Monterey Jack are classic. For sharper flavor, try cheddar. A mix gives the best melt and taste.

Is there a gluten-free option?

Yes.

This recipe is naturally gluten-free if your broth and spices are certified GF. Double-check labels to be safe.

Can I cook it entirely on the stovetop?

Yes. After adding rice and broth, cover and simmer on low, stirring occasionally, until rice is tender.

Sprinkle cheese, cover briefly to melt, and serve.

Final Thoughts

Stuffed pepper casserole delivers all the comfort of a classic with a fraction of the effort. It’s hearty, colorful, and flexible enough to suit your taste and pantry. Keep it simple for a nostalgic dinner, or dress it up with your favorite add-ins.

Either way, it’s a reliable, feel-good staple you’ll want in your weeknight rotation.