Wash the zucchinis thoroughly and cut off the end pieces. Slice each zucchini lengthwise in half. Take a spoon to scoop out the inside flesh. Discard zucchini flesh or use it to make some delicious Zucchini Bread.
Lightly spray a 9x13 inch baking dish with cooking spray. Place zucchini shells skin side down and season the inside of the zucchini with salt and pepper. Set aside.
Brown sausage in a large skillet. Use a wooden spoon (or this magical tool) to break up the sausage. Once fully cooked add the Vodka sauce to the skillet. Continue to simmer until heated through.
Fill each zucchini shell with the sausage mixture. Sprinkle with Mozzarella and Parmesan cheese.
Bake uncovered at 400º Fahrenheit for 15-20 minutes or until the cheese has melted.