1. Preheat oven to 350F.
2. Place potato nuggets in lightly oiled medium casserole dish.
3. Drizzle onion, melted butter, salt and pepper over potatoes.
4. Top with Parmesan, cheddar cheese and croutons.
5. Cover with foil and bake 20 minutes.
6. Uncover and bake an additional 10 minutes until hot and cheese is melted
Tip: Good served with sour cream, diced tomatoes and bacon.