Preheat the oven to 425 degrees. Grease a large baking sheet with 1 Tbsp olive oil and set aside. \nRemove the casings from the sausage and crumble into small chunks. Add to a large mixing bowl along with the gnocchi, garlic, peppers, onion, tomatoes, 3 Tbsp olive oil, Cuba spice, 1 tsp kosher salt and crushed red pepper flakes. Toss to combine. Spread in an even layer on the prepared baking sheet. \nTransfer to the oven and roast, tossing once halfway through, until the sausage is cooked through, veggies are tender and tomatoes begin to burst, about 25 minutes. \nRemove baking sheet from the oven and turn the oven to broil. Sprinkle the entire baking sheet with mozzarella. Return to the upper rack of the oven and broil until the veggies and gnocchi are lightly browned and the cheese is melted and bubbling, about 3-5 minutes more. Top with torn basil leaves and freshly grated Parmesan. Dig in!