01 -
Preheat oven to 400ºF and lightly grease a 10-inch pie plate with butter or non-stick spray.
02 -
Spread diced ham evenly across the bottom of the greased pie dish. Add finely chopped onions and grated Swiss cheese on top.
03 -
In a large bowl, whisk together beaten eggs, whole milk, and dry biscuit mix. Add salt, garlic powder, onion powder, and pepper, and mix until combined.
04 -
Pour the prepared egg mixture over the ham, onions, and cheese in the pie dish.
05 -
Place the pie dish in the preheated oven and bake for 35-40 minutes, or until the top is golden brown and bubbly, and a toothpick inserted in the center comes out clean.
06 -
Remove from oven, slice, and serve warm.