When ready to make, preheat oven to 375 degrees.
Mix the custard ingredients.
Pour the custard mix into shallow dish, such as a pie plate.
Cut the chilled oatmeal into nine equal squares.
Dip oatmeal squares into custard mixture, allow to soak for 30 seconds on each side.
Over medium-low heat, melt 1 tablespoon of butter or coconut oil in a non-stick pan.
Place 2-3 slices of oatmeal 'bread' at a time into the pan and cook until golden brown, approximately 2 to 3 minutes per side.
Remove from pan and place on a baking sheet and into the oven for 5-10 minutes.
Repeat with all squares.
Serve immediately with maple syrup or your favorite topping.