Combine together the flour, sugar, baking powder, salt, brown sugar, and instant oatmeal in a large-sized bowl. Make a well in the center for the wet ingredients.
Using a wire whisk, whisk the eggs, milk, vanilla, maple syrup, and vegetable oil together in a liquid measuring cup, then slowly add them into the well, and fold them into the dry ingredients. Mix together until smooth. There might be a few lumps, and that’s ok.
Set the batter aside and allow to rest for 5 minutes while heating up your pan or griddle.
Heat a nonstick pan or griddle over low-medium heat and wipe over with a little butter to lightly grease the pan. Pour 1/4 cup of batter onto the pan and spread out gently into a round shape with the back of your ladle or measuring cup.
When the underside is golden and bubbles begin to appear on the surface, about 3-5 minutes, flip with a spatula and cook until golden, about 2-3 minutes. Repeat with the remaining batter.
Serve with honey, agave syrup, fruit, maple syrup, or powdered sugar, or enjoy them plain.