Step 1

Preheat oven to 375 degrees.

Step 2

Melt butter in a small nonstick pan and cook onion until soft. Let cool slightly.

Step 3

In a large bowl, whisk together eggs, half-and-half, salt and pepper.

Step 4

Stir in ham and both cheeses. (I like to leave a small handful of cheese to sprinkle on top.)

Step 5

Stir in cooked onion.

Step 6

Pour filling into pie crust, set on a baking sheet and place in oven for 40 to 45 minutes, or until set.

Step 7

Serve warm or chilled.