Here at Delish, we’re big fans of stuffed peppers—strong enough to hold their shape, peppers are large enough to hold a decent amount of filling while taking to a variety of flavors. While we love to experiment with countless variations, this classic recipe is hard to beat.
Step 1
Preheat oven to 400°. In a small saucepan, prepare rice according to package instructions.
Step 2
Meanwhile, in a large skillet over medium heat, heat oil. Cook onion, stirring occasionally, until softened, about 7 minutes. Stir in garlic and tomato paste and cook, stirring, until fragrant, about 1 minute more. Add ground beef and cook, breaking up meat with a wooden spoon, until no longer pink, about 6 minutes. Drain excess fat.
Step 3
Stir in rice and diced tomatoes; season with oregano, salt, and pepper. Let simmer, stirring occasionally, until liquid has reduced slightly, about 5 minutes.
Step 4
Arrange peppers cut side up in a 13"x9" baking dish and drizzle with oil. Spoon beef mixture into each pepper. Top with cheese, then cover baking dish with foil.
Step 5
Bake peppers until tender, about 35 minutes. Uncover and continue to bake until cheese is bubbly, about 10 minutes more.
Step 6
Top with parsley before serving.