Jamur Bayam dan Quiche Tanpa Kerak Feta

Bahan-bahan (6 porsi)

• 1 10 oz . box frozen chopped spinach ($1.34)
• 8 oz . mushrooms ($1.97)
• 1 clove garlic, minced ($0.04)
• 1/8 tsp salt ($0.01)
• 1 Tbsp cooking oil (divided, $0.04)
• 2 oz . feta cheese ($1.26)
• 4 large eggs ($2.43)
• 1/4 cup grated Parmesan ($1.46)
• 1/4 tsp pepper ($0.04)
• 1 cup milk ($0.18)
• 1/2 cup shredded mozzarella ($1.17)