Asparagus, Feta & Yogurt Frittata - EasiYo AU

Ingredients

• 2 Tbsp butter
• ½ red onion, finely sliced
• 1 bunch asparagus, cut into thirds (ends trimmed)
• 2 cups spinach, roughly chopped
• 8 eggs
• ½ cup feta cheese
• ¾ cup EasiYo Greek Style Unsweetened yogurt
• 2 Tbsp parsley, chopped
• ¼ cup parmesan cheese
• Salt and pepper