Step 1

Preheat oven to 350 degrees and grease a 9x13-inch baking dish.

Step 2

Cook and crumble Italian sausage in a large nonstick pan. Once you have it broken apart, add the onion. Cook until the sausage is no longer pink.

Step 3

Add garlic, Italian seasoning, and crushed red pepper flakes and cook 1 minute.

Step 4

Turn heat to low and add cream cheese. Stir until melted. Remove from heat.

Step 5

Let cool slightly and then stir in 3/4 cup of mozzarella cheese, ricotta cheese, and pepper.

Step 6

Stuff the mixture into the manicotti shells. You can either use a spoon or fork to push it in or you can transfer the mixture ot a large ziptop bag and snip the corner and pipe it in.

Step 7

Pour about 1/2 cup of sauce in the prepared baking dish and spread it evenly. Place the filled manicotti tubes on top of the sauce.Pour remaining sauce on top of manicotti.

Step 8

Cover and bake for 25 minutes.

Step 9

Sprinkle with remaining mozzarella cheese and Parmesan cheese. Bake uncovered for 10 more minutes.