Summer Squash Gratin Recipe

INGREDIENTS

• zest of one lemon
• 1 1/2 pounds summer squash or zucchini, cut into 1/6th-inch slices
• 1/2 teaspoon fine grain sea salt
• 1/4 cup fresh oregano leaves
• 1/4 cup fresh Italian parsley
• 1 large garlic clove, chopped
• 1/4 teaspoon fine grain sea salt
• pinch of red pepper flakes
• 1/2 cup extra-virgin olive oil
• 1/4 cup unsalted butter
• 2 cups fresh whole wheat bread crumbs*
• 1/2 pound waxy potatoes, sliced transparently thin
• 3/4 cup grated Gruyere cheese, grated on a box grater (or feta might be good!)