Zucchini Cheddar Quiche

Ingredients

• 1 frozen 9-inch deep dish pie shell, thawed
• 1 medium onion, chopped (1/2 c.)
• 1 Tbsp. butter or margarine
• 1 1/2 c. packed coarsely shredded zucchini (8 oz.)
• 1/2 tsp. oregano
• 1/4 tsp. thyme
• 3/4 tsp. salt
• 1/4 tsp. pepper
• 3 eggs
• 2 Tbsp. grated Parmesan cheese
• 1 1/2 c. half and half
• 1/2 c. coarsely shredded sharp Cheddar cheese (2 oz.)
• 2 rectangular slices Cheddar cheese, each cut in 2 triangles