Cheesy Asparagus and Spinach Kefir Quiche

Ingredients

• 1 cup + 2 Tbsp Lifeway Organic Organic Whole Milk Plain Kefir
• ½ cup Lifeway Farmer Cheese
• 1 box Simple Mills Artisan Bread Mix
• 1/2 cup crumbled feta cheese
• 8-10 asparagus spears, ends removed and cut into 1-inch pieces
• 4 cups fresh baby spinach
• 6 large eggs
• 1 egg white
• 1/4 cup olive oil + more as needed
• Salt and pepper, to taste