Creamy Gruyere Baked Zucchini Squash Gratin

Ingredients (15)

• 4 Tablespoons Unsalted Butter melted and divided
• 2 Tablespoons Olive Oil
• 2 Zucchini sliced thin (we use a mandolin)
• 2 Yellow Squash sliced thin
• 1 Shallot sliced thin
• 4 Cloves Garlic minced
• 2 Cups Spinach packed into the measuring cup or see note
• 1 Tablespoon Fresh Thyme
• 1/4 Cup Fresh Parsley chopped
• 1/2 Teaspoon Ground Nutmeg
• 1 Tablespoon Lemon Juice
• 4 Large Eggs
• 3/4 Cup Heavy Cream whole milk or half and half work if needed
• 3/4 Cup Gruyere Cheese grated
• 1/3 Cup Freshly Grated Parmesan Cheese divided