Summer Garden Succotash Gratin - The Local Palate

Ingredients

• 3 tablespoons butter
• ¼ cup olive oil, divided
• 1 small yellow onion, diced
• 3 garlic cloves, minced
• 1 large green bell pepper, diced
• 3 cups fresh corn kernels
• ¼ pound green beans
• ¼ pound yellow wax beans
• 2 cups butter beans
• 1 cup purple hull peas
• 1 teaspoon cayenne pepper
• Salt and freshly ground black pepper to taste
• ¼ cup vegetable stock
• 1 (14½-ounce) can diced tomatoes
• 2 tablespoons chopped curly parsley
• 2 tablespoons chopped chives
• 1 cup heavy cream
• 2 large eggs
• 1 cup grated white cheddar cheese
• ¾ cup Ritz cracker crumbs
• ¼ cup grated Parmesan cheese