Start by pre-heating your oven to 350 degrees and then wash and grate your apple. You could also substitute the apple with 1 cup of cinnamon apple sauce. However, the grated apple adds a little more texture.
Then stir the almond extract into the milk. This adds a great almond flavor to the baked oatmeal. Plus, stirring it in with the milk makes sure the flavor is evenly mixed within the casserole.
Next, pour the milk over the oatmeal. You could also use a plant based milk instead of regular milk. I prefer to use almond milk with this recipe. (Keeps a whole almond theme going.)
Spoon in the brown sugar, distributing it evenly throughout the casserole dish. But don’t worry about mixing it in. The brown sugar will melt down and add some color and sweetness to the oatmeal.