Preheat oven to 425F.
Crack two eggs into a large bowl and whisk until well beaten.
Mix in oat flour, and then all remaining ingredients. Batter will appear slightly lumpy which is OK. If the batter appears too thin, allow it to sit for 3 minutes to thicken. If the batter is too thick, thin with a little milk.
Prepare a 13x18 baking sheet by spraying it with avocado or coconut oil spray.
Pour prepared batter onto the baking sheet. Tap pan lightly on the countertop to make sure the batter is evenly distributed over the sheet pan.
Sprinkle on desired toppings.
Bake for 13-15 minutes or until the top springs back slightly and is golden brown.
Cut into squares for serving.