Crumble the ground beef into a skillet and cook over medium-high heat until fully browned. Drain off the excess fat, then stir in the spaghetti sauce. Simmer the meat sauce for 7-10 minutes, stirring occasionally.
While the meat sauce is simmering, bake the garlic toast according to package directions until golden brown on both sides.
Spoon the meat sauce on top of the garlic toast, then top with mozzarella cheese. Serve hot