Zucchini Gratin with Yellow Squash

INGREDIENTS:

2 tablespoons butter

1/2 onion thinly sliced

1 small zucchini sliced in rounds 1/8 to 1/4 inch thick (please see notes)

1 small yellow squash sliced in rounds 1/8 to 1/4 inch thick

2 large cloves garlic minced

1/2 cup heavy cream

1/4 cup grated parmesan

1 cup shredded smoked gouda

DIRECTIONS:

Preheat oven to 450 degrees.

Melt butter in an oven-proof skillet over medium heat. Add onion and cook until the edges start to brown, approximately 5 minutes. Add garlic and cook for an additional 1 minute. Add cream and simmer until bubbly …