Preheat oven to 375°F.
Cook jumbo shells according to package instructions. Drain and set aside.
Remove casings from Italian brats and cook in a skillet over medium heat until browned and cooked through. Drain excess grease.
Season sausage with garlic powder, onion powder, Italian seasoning, smoked paprika, and dried basil. Stir well and remove from heat.
In a bowl, mix together ricotta, 1 cup of mozzarella, Parmesan cheese, egg, and the seasoned sausage mixture.
Spoon the filling into each cooked shell.
Spread 1 cup of marinara sauce in the bottom of a 9x13 baking dish.
Place stuffed shells in the dish and pour remaining sauce over the top.
Sprinkle remaining mozzarella on top.
Cover with foil and bake for 25 minutes. Remove foil and bake another 10-15 minutes until bubbly and golden.
Let rest for 5 minutes. Serve and enjoy.
Use your favorite marinara or pizza sauce.
Add a little red pepper flakes for a kick.
Make ahead and refrigerate; bake the next day.
Add parsley and make it fancy.