3 bell peppers, halved lengthwise, seeds and membranes removed
1 cup ricotta cheese
1 egg
1 teaspoon Italian seasoning
2 cups marinara sauce
1 cup shredded mozzarella cheese
1/2 cup grated Parmesan cheese
Preheat the oven to 375 degrees. Line a baking sheet with aluminum foil and place the pepper halves on it, cut-side up. Bake for 20 minutes.
Combine the ricotta, egg and Italian seasoning in a bowl and stir until well-combined.
Place a heaping tablespoon of the ricotta mixture inside each pepper. Top with two heaping tablespoons of tomato sauce and finish with a heaping tablespoon of mozzarella.
Return the peppers to the oven and bake for an additional 25 minutes, until bubbly on top.
Remove from the oven, sprinkle with Parmesan cheese and bake for 5 more minutes, until golden brown.