Ingredients
Method
- Preheat oven to 375°F. Grease a 9x13-inch baking dish.
- In a skillet, heat olive oil and 1 tbsp butter over medium. Cook onions 15–20 minutes until golden and slightly sweet. Set aside.
- Spread half the tater tots in the dish. Scatter ham and caramelized onions, then sprinkle Swiss. Top with remaining tater tots.
- Whisk eggs, milk, salt, pepper, and remaining butter. Pour evenly over casserole.
- Bake 35–40 minutes until set and golden on top. Let sit 5 minutes before serving.