playground potluck for passover

1 large package frozen spinach
8 oz sour cream
1 cup finely chopped onion
4 eggs
1/2 + cup parmesan
2 T salt
2 t. garlic powder
1 t. black pepper
10 potatoes, microwaved 8-10 minutes or until tender
2-3 T olive oil

Combine all, use potato masher to break up potatoes to smaller pieces, pour into greased baking dish (11x9) and bake at 400 20 minutes