My friend, Julie Harrington who is a dietitian and chef breaks down the difference between quick oats/1 minute oats and rolled oats/old fashioned oats HERE. She explains that 1 minute oats are steamed for longer than rolled oats and can't absorb as much water as rolled oats. Using 1 minute oats in this recipe may lead to oats that break apart. I recommend using rolled oats/old fashioned oats in this single serving baked oatmeal recipe for a better texture.