Step 1

Preheat the oven to 375 degrees.

Step 2

Melt the butter in a 10-inch oven proof skillet (preferably cast iron) over medium heat.

Step 3

Add the onion and saute for 3-5 mins until golden. Add the sliced mushrooms and garlic and continue to saute until mushrooms are golden brown, about 10-12 mins.

Step 4

Whisk the eggs, half and half, chives, thyme, salt and pepper together in a large bowl.

Step 5

Scatter the goat cheese over the mushroom mixture and pour the egg mixture over the top.

Step 6

Stir the mixture in the pan and cook over medium heat until the edges are set but the center is still loose, about 8-10 mins.

Step 7

Put the pan in the oven and finish cooking for an additional 8-10 mins or until set.

Step 8

Slice and serve. The frittata can be served warm or at room temperature.