Heat the olive oil in a large skillet with a tight-fitting lid over medium-high heat. Add shallot and garlic; cook and stir until soft. Add sausage meat; cook, breaking up with a wooden spoon, until no longer pink. Stir in tomatoes and tomato paste then season with the salt and pepper. Add the cooked pasta and stir well to combine. Remove skillet from the heat; add the Mozzarella and basil. Cover the skillet and allow the cheese melt. Serve hot.