Created by maDonna on August 8, 2017
Step 1: Grease a 9x13 casserole dish. Preheat oven to 375° F (190° C).
Step 2: In a skillet over medium heat, saute the onions with 1/4 cup butter, 1/2 salt and pepper until the onions are brown and soft (around 10 minutes or more).
Step 3: Place a single layer of cooked lasagna noodles in the bottom of the casserole dish. Evenly spread 1/2 of the mashed potato on top of the noodles. Spread 1/2 of the cooked onions on top of the potatoes, then sprinkle 1 cup of the shredded cheese.
Step 4: Repeat layers once more, then top with a final layer of noodles and the remaining 1 cup of cheddar cheese.
Step 5: Bake for 30 minutes, or until the top is golden and bubbly.
Step 6: Put cut potatoes into a large pot and cover with water. Boil until the potatoes are soft when poked with a fork. Drain water.
Step 7: Add in cream, sour cream, butter, salt, pepper and garlic powder. Mash and stir until smooth and well-blended. Add more salt and pepper if desired.