Potato casserole. Bear with me, I just make it from memory, lost the recipe long ago.
You can use frozen hash browns or make your own. I make my own using a mandolin slicer. I put the hash browns in water to keep them from turning brown.
Chop an onion and saute until translucent.
Sour cream, depending on size of casserole, use large or small container.
Melt half stick butter in bottom of casserole dish.
Crush cornflakes between wax paper using a rolling pin, need a cup or two
1 stick melted butter
Drain the hash browns if you made your own, mix with onion and sour cream. Pour in casserole dish, top with crushed cornflakes. Drizzle melted butter over cornflakes. Bake at 350 degrees for 30-45 minutes.