Sunshine Summer Vegetable Gratin Recipe Easy Potluck Side

Ingredients

• 2 medium zucchini, thinly sliced (approximately 1 lb / 450g)
• 1 medium eggplant, thinly sliced (approximately 1 lb / 450g)
• 3 ripe tomatoes, thinly sliced (approximately 1.5 lbs / 680g)
• 1 red bell pepper, thinly sliced (approximately 8 oz / 225g)
• 1 yellow bell pepper, thinly sliced (approximately 8 oz / 225g)
• 1 medium yellow onion, thinly sliced (approximately 6 oz / 170g)
• 2 cloves garlic, minced
• 2 tablespoons olive oil
• 2 tablespoons all-purpose flour (25g)
• 2 cups whole milk (475ml)
• 1/2 cup heavy cream (120ml)
• 1/4 cup grated Parmesan cheese (25g), plus extra for topping
• 1/4 cup grated Gruyère cheese (25g)
• 1 teaspoon dried thyme
• 1/2 teaspoon dried oregano
• 1/4 teaspoon nutmeg, freshly grated
• Salt and freshly ground black pepper to taste
• 2 tablespoons breadcrumbs (optional, for topping)
• Fresh basil leaves, for garnish (optional)