For an egg-free version, replace the eggs with two prepared flax eggs. The finished oatmeal may be slightly softer, so allow it to cool thoroughly before slicing.
Maple syrup gives the oatmeal a cozy fall flavor, while honey provides a slightly different sweetness. Either works well.
Chocolate chips turn this into a sweeter breakfast, while walnuts or pecans add crunch without much additional sweetness.
Serve warm squares with Greek yogurt and berries for extra protein and freshness. You can also add sliced bananas, apples, nut butter, milk, maple syrup, honey, or whipped cream.