Casserole of seasoned ground beef, creamy mushroom sauce, and crispy tater tots baked until golden.
Use frozen tater tots straight from the freezer—do not thaw. Drain ground beef well after browning to avoid a watery casserole.
For a richer sauce, substitute half the milk with cream of mushroom soup. Assemble up to 4 hours ahead; cover and refrigerate. Add 5 minutes to bake time if starting from cold.