Stuffed Shells with Arrabbiata Sauce

Directions

1. Preheat oven to 400°. Cook pasta according to package directions for al dente. Drain and rinse in cold water.
2. In a large skillet, cook and crumble beef and chorizo with onion and garlic over medium heat until meat is no longer pink and vegetables are tender, 6-8 minutes; drain. Stir in spinach, 1/2 teaspoon salt and 1/4 teaspoon pepper. Transfer to a bowl; cool.
3. Stir ricotta and Parmesan cheeses, eggs, basil, parsley and remaining salt and pepper into meat mixture. For sauce, in a saucepan, heat oil over medium heat. Add pancetta; cook and stir until golden brown, 6-8 minutes. Add pepper flakes and garlic; cook and stir 1 minute. Add marinara sauce; bring to a simmer.
4. Spread 1 cup sauce into a greased 13x9-in. baking dish. Fill pasta shells with meat mixture; place in baking dish, overlapping ends slightly. Top with remaining sauce. Sprinkle with mozzarella cheese. Bake until heated through and cheese is melted, 20-25 minutes.