Soak each piece of bread in the egg mixture thoroughly while turning the bread slices several times in the egg mixture
Using medium-high heat, melt a tablespoon of butter in pan and lightly brown the bread (use additional butter as needed), about 3 minutes per side
Transfer lightly browned bread to sheet pan, bake for 6 minutes, then flip each piece over and bake for another 6 to 8 minutes (12 to 15 minutes total)