Preheat oven to 425

Measure flour, baking powder and salt into large mixing bowl. Mix to blend.

Crack in eggs.

Add milk.

Use your hand mixer or immersion blender to blend thoroughly.

You can add your additional items to the batter now if desired or to the individual sheet pans. If not adding in items then add 2 more cups of flour and remix with hand mixer/immersion blender.

Cut parchment paper to fit your pans or spray them with cooking oil so they don't stick.

Separate batter between 2 full size sheet pans and 1 half sheet aka regular size or into 6 half sheets.

Cook in oven for 20 minutes.

Either rotate bottom pan to top after 10 minutes or take top sheet pan out and move to bottom one up a rack.  Then cook for additional 10 mins.