Strawberry Stuffed Sourdough French Toast

First, prepare the French toast batter. In a bowl, whisk together 2 eggs, 2 egg whites, 1/2 cup strawberry kefir, 1/2 cup unsweetened almond milk, and 1/2 tablespoon cinnamon. Soak slices of sourdough bread in this mixture. Heat coconut oil in a skillet over low to medium heat, then cook the soaked bread slices until golden brown on both sides. While the French toast cooks, prepare the strawberry filling by mixing 1/2 cup Greek yogurt with 2 tablespoons strawberry kefir. Once the French toast is cooked, layer it with the strawberry filling, cashew butter, warmed blueberries, and sliced bananas.