Place approximately 1-2 teaspoons of butter into a medium size skillet and heat over medium heat. Once skillet is hot, dip a piece of brioche bread into the egg and milk mixture. Fry in pan.
If you want to serve the entire batch piping hot at once, here’s a tip. Place each slice of French toast on a baking sheet and bake in an oven preheated to 350 degrees for 5-10 minutes.