Macaroni & Cheese Quiche

A Boxed Mac-and-Cheese Crust Holding a Savory Custard

This is a classic 1970s casserole hack that still works. A box of macaroni and cheese gets prepared with extra binding eggs, then pressed into a baking dish to form a pasta crust. The egg-and-ham filling pours on top and bakes into a creamy custard with the cheesy noodle base catching every drip.

The technique that makes this work is using less milk than the box directs. The mac and cheese needs to hold its shape as a crust, not stay loose like a side dish, so cutting the milk back to two tablespoons stiffens the noodles into a sliceable foundation.

A can of cream of mushroom soup is the lazy genius move. It thickens the custard, adds savory depth, and means you don’t have to make a separate béchamel. Chopped ham, drained mushrooms, and onion fold in for one-pan dinner energy.

Kitchen Tips

• Press the mac-and-cheese mixture firmly up the sides of the dish, not just the bottom. Loose sides slump during baking and the filling spills.
• Cover loosely with foil for the last 20 minutes as the directions specify. This prevents the top from over-browning while the center sets.
• Let cool 5 to 10 minutes before slicing. Hot custard runs; rested custard slices clean.
• Toss the shredded cheese with flour before adding to the filling. The flour keeps the cheese suspended in the custard instead of sinking.

Variations

• Swap ham for chopped cooked bacon, browned sausage, or rotisserie chicken.
• Use cream of celery or cream of chicken soup in place of mushroom for a different savory base.
• Add a handful of frozen peas, sauteed spinach, or chopped broccoli for green color and texture.