Recipes: Katherine schwarzenegger's kitchen sink quiche

Preparation:   Preparation time: 20 mins Cooking time: 40 mins Serving: 4 Ingredients: 1 tablespoon unsalted butter 1 teaspoon olive oil 3 red baby potatoes 1 small yellow onion 1 small bell pepper, any color 1 cup spinach, chopped 12 medium to large eggs 3/4 cup heavy cream or whole...