8 shells 110 gr mozzarella cheese 120 gr provolone cheese 425 gr hamburger 1 package mushrooms 475 ml sour cream 950 ml spaghetti sauce
Instructions
Mix sauce, hamburger, shells and mushrooms together. Put half in crockpot, pour sour cream over this and sliced provolone; now rest of sauce mixture, sliced mozzarella on top. Cook on low for 6-7 hours.