Step 1

Preheat oven to 350°.

Step 2

Ladle about 1 cup marinara sauce on the bottom of a 9 x 12 baking dish.

Step 3

Heat oil in a 12-inch skillet over medium high heat. Add sausage and cook until browned and no pink remains. Remove from heat, drain, and let cool slightly.

Step 4

Combine cooked sausage, spinach, ricotta, Parmesan, HALF of the mozzarella, egg, salt, black and red pepper (if using), in a medium bowl.

Step 5

Place a piece of wax or parchment paper on the counter and lay out lasagna noodles. If necessary, pat noodles dry with paper toweling.

Step 6

Take 1/4 cup of sausage mixture and spread evenly over one noodle. Repeat until all noodles are covered. Roll each noodle carefully and place seam side down into the baking dish.

Step 7

Ladle sauce over the noodles in the baking dish. Sprinkle remaining 1/2 cup of mozzerella cheese over noodles.

Step 8

Cover and bake for 25-30 minutes, or until cheese melts.