Preheat oven to 375°F. While the oven is preheating, cook the shells in heavily salted water according to the package instructions. Once cooked, drain the pot and fill it with cold water to both stop the cooking and to keep the shells from sticking to each other.
20 jumbo pasta shells
Heat the olive oil over medium-high heat in a pot or deep pan. Once heated, add the chopped onion and sauté until translucent, about 3-5 minutes. Add the garlic, 1 teaspoon salt, black pepper, and dried oregano. Sauté for another 1 minute until the garlic is fragrant, stirring frequently.
1 tablespoon olive oil, ½ medium onion, 5 garlic cloves, 2 teaspoons salt, ½ teaspoon black pepper, ½ teaspoon dried oregano
Add the ground chicken and cook until no longer pink, breaking it apart as it cooks. Once there is no more pink, add in the marinara sauce and chopped basil and stir to combine. Allow the entire mixture to simmer for 3-5 minutes then remove from the heat.
1 pound ground chicken, 3 cups marinara sauce, ¼ cup basil
Meanwhile, in a large bowl, combine the ricotta cheese, 2 cups of mozzarella cheese, parmesan cheese, 1 egg, parsley, ½ teaspoon salt, and ¼ teaspoon black pepper.
15 ounces ricotta cheese, 1 large egg, ½ cup parmesan cheese, 3 cups mozzarella cheese
Spread a few spoonfulls of sauce in a single layer in the bottom of a 9x13 casserole dish. Stuff the shells with the ricotta mixture until they are just filled (try not to overstuff) and place them seam side down into the prepared casserole dish.
Once you’ve placed all shells in your casserole dish, cover them with the remaining sauce and mozzarella cheese.
Cover with dish with foil and bake for 30 minutes. You should see the sauce beginning to bubble around the edges. Uncover the dish and broil on high for an additional 2-4 minutes, allowing the cheese to brown. Be careful to watch carefully while broiling because it will be quick to burn!
Remove from the oven, garnish with parsley, serve warm, and enjoy!
¼ cup parsley