In A Large Skillet, Cook Beef Over Medium Heat Until No Longer Pink; Drain. Stir In The Spaghetti Sauce; Cook Over Medium Heat For 5-10 Minutes Or Until Heated Through. Press Biscuits Onto The Bottom And Up The Sides Of Greased Muffin Cups. Spoon 2 Tablespoons Beef Mixture Into The Center Of Each Cup. Bake At 375