Substitute
Prepare as directed, using reduced fat condensed cream of mushroom soup and 2% Milk VELVEETA.
Make Ahead
Assemble casserole as directed. Do not bake. Cover with foil. Freeze up to 2 months. When ready to serve, do not thaw. Bake, covered, in preheated 375°F-oven 50 minutes. Uncover; bake an additional 20 minutes or until heated through.
How to Chop Onions
Cut a peeled whole onion into thin slices about 1/4 inch thick. Stack two or three slices, then make several crosswise cuts, about 1/4 inch apart, in both directions down through onion slices.