Stuffed Bell Pepper Casserole

This is my go-to stuffed bell pepper casserole recipe, and it never lets me down.

Stuffed peppers are a genuine classic, but stuffing each individual pepper is honestly more effort than most weeknights allow. This casserole solves that entirely, the same beef, rice, and pepper combination, just layered together in one dish instead of stuffed one at a time.

This has become my regular weeknight version of a family favorite, all the flavor of stuffed peppers with a fraction of the actual work.

Why You’ll Love This Recipe

A few reasons this casserole earns its regular spot in the rotation.

Same great flavor: beef, rice, and peppers, all present.
Genuinely easier: no individual stuffing required.
One dish: minimal cleanup.
Great for a crowd: easy to make a full pan.

Why This Works

Sautéing the diced peppers briefly before layering them into the casserole, rather than adding them raw, is what keeps them from releasing too much liquid during baking and watering down the dish. That brief cook softens them and drives off some moisture, so the finished casserole holds together instead of turning soupy.

Step-by-Step

Brown the ground beef with chopped onion, seasoning with salt, pepper, and Italian seasoning. Drain excess fat.

Sauté the diced bell peppers in a bit of oil for 4 to 5 minutes, until slightly softened. Combine the cooked rice, beef, sautéed peppers, and half the marinara sauce in a large bowl, mixing well.

Spread the mixture into a greased baking dish. Top with the remaining marinara and a generous layer of shredded mozzarella.

Bake at 375 degrees for 20 to 25 minutes, until bubbling and the cheese is melted and golden. Let it rest for a few minutes before serving.

Tips

• Sauté the peppers briefly before adding them, this keeps the casserole from getting watery.
• Use day-old or leftover rice for the best texture.
• Let the casserole rest before serving so it holds together when scooped.
• Drain the beef well before combining with the other ingredients.
• Use a mix of colored bell peppers for visual appeal.

Variations

• Add corn or black beans for extra texture.
• Use ground turkey instead of beef.
• Add a pinch of red pepper flakes for heat.
• Top with a sprinkle of parmesan along with the mozzarella.

What to Serve With

• A simple side salad.
• Garlic bread.
• Roasted vegetables.
• A cold soda.

Storage

Refrigerator: store in an airtight container for up to 4 days.

Freezer: freeze in a freezer-safe dish for up to 3 months.

Reheating: reheat covered in the oven at 350 degrees until warmed through, or microwave individual portions.

Make Ahead

This casserole can be assembled a day ahead and refrigerated unbaked, then baked fresh, adding a few extra minutes to the bake time.

Frequently Asked Questions

Can I make this ahead and freeze it?

Yes, assemble it fully, cover tightly, and freeze unbaked, then thaw overnight before baking as directed.

Why is my casserole watery?

The peppers likely weren’t sautéed first, this step helps drive off excess moisture before baking.

Can I use a different rice?

Yes, brown rice works well too, just make sure it’s fully cooked before combining with the other ingredients.

Final Thoughts

This casserole proves a classic dish can genuinely become easier without losing any of its flavor. Give it a try for your next family dinner.