Garlic-Rubbed Grilled Cheese with Bacon and Tomatoes Ingredients 8 slices bacon 3 oz (about 1 1/4 cups) grated Gruyère 3 oz (about 1 cup) grated fontina 2 tablespoons finely grated Parmigiano-Reggiano 1/4 teaspoon crushed red pepper flakes (or to taste) 8 1/2-inch-thick slices Italian bread 2 medium ripe tomatoes, cut into 1/4-inch-thick slices 2