Spinach Feta Quiche – Turley Hill

Ingredients

• 1/4 cup butter
• 2 large cloves garlic
• 1/2 large onion, chopped
• 1 (10-oz.) bag frozen chopped spinach, thawed and drained
• 1 (6-oz) container feta cheese, crumbled
• 1 (8-oz) pkg. shredded cheddar
• Salt and pepper to taste
• 1 (9-inch) deep dish pie crust
• 3 eggs, beaten
• 3/4 cup milk
• 1 (4.5-oz) can mushrooms, drained