Preheat the oven to 375 degrees, spray a 9x13-inch baking dish with nonstick cooking spray.

In a large skillet, crumble and brown the sausage. Remove and drain on paper towel to remove grease.

Cut each biscuit into eight pieces.

In a large mixing bowl, combine marinara with cut-up biscuits. Add the cooked sausage, stir to combine.

Spread the mixture into prepared casserole dish.

Top with shredded mozzarella cheese and sliced pepperoni.

Bake uncovered for about 25-30 minutes or until biscuits are cooked through and edges are nicely golden brown.