Add garlic and sage and cook until sausage is browned, stirring occasionally. Add tomatoes, stir and reduce the heat to medium-low. Cook until sauce is thick and glossy, 10 to 15 minutes.
To serve, spoon the pasta e fagioli into four serving bowls. Spoon over the parmesan and tomato mixture. Season, to taste, with freshly ground black pepper. Drizzle a splash of olive oil over each ...