My neighbor made us a homemade casserole and brought it over a few weeks ago when I came home from the hospital from my hip surgery. I had never heard of a Pierogi & Lasagna Casserole before but once hubby and I tried it...wow...we were really missing out! Anyway, here is the recipe which she included with the casserole.
Optional: You can substitute with instant mashed potatoes if you are in a hurry and it's a weeknight & dinner needs to get onto the table.
Homemade Pierogi & Lasagna Casserole Recipe
10 to 12 large potatoes, boiled and mashed
3/4 lb. cheddar cheese, shredded
2 sticks butter, softened
1 large onion, finely diced
1 lb. lasagna noodles, cooked & water drained
salt to taste
ground black pepper to taste
Mash potatoes; add the shredded cheese, beat with a mixer until combined. Saute the onions in butter until fork tender. Add 1/3 of the sauteed onions to the potato mixture, salt & pepper to taste.
Butter a 13" by 9" baking dish. Layer cooked lasagna noodles and then mashed potatoes, repeat forming layers as you go....ending with lasagna noodles on the top. Pour remaining butter & onions over the top. Cover and bake in a preheated 350 degree oven for 15 to 20 minutes, or until heated through. Remove and serve.