Saute leeks and garlic on medium-high heat in oil in an oven-safe skillet such as a well-seasoned cast iron pan for 1-3 minutes, until translucent and tender.
Poor the ricotta egg white mixture over the sauteed veggies, then quickly and gently move veggies around so they are evenly incorporated. Let set on the stove for 3-5 minutes, then transfer to the oven for 15-20 minutes, until eggs are fully set.
Let cool completely, or for at least 10 minutes. Serve with avocado slices and salsa, or whatever you like with your eggs!