Zucchini and Yellow Squash in Creamy Gouda Gratin - cookrisp

Ingredients

• 2 tablespoons butter
• 1/2 onion, thinly sliced
• 1 small zucchini, sliced in rounds 1/8 to 1/4 inch thick
• 1 small yellow squash, sliced in rounds 1/8 to 1/4 inch thick
• 2 large cloves of garlic, minced
• 1/2 cup heavy cream
• 1/4 cup grated Parmesan cheese
• 1 cup shredded smoked Gouda