Add boiling water to 1/4 a cup of flaxseed meal and stir. The texture isn't exactly the same, but once you add stevia, cinnamon, and nuts/almond butter, you'll be a lot less likely to miss your usual oatmeal breakfast. Add some chia seeds or use coconut milk to thicken it up. Get the recipe here.
Get flaxseed meal for $2.69 from Target.