Heat oven to 325 F. Line an eight inch square pan with parchment and lightly grease.
In a medium bowl whisk almond flour, oat flour, protein powder, brown sugar, baking soda, and salt.
In a large bowl stir peanut butter, applesauce, milk, egg, and vanilla until smooth.
Add dry mix to wet mix. Stir with a spatula until a thick dough forms. Fold in most chocolate chips.
Spread dough in the pan. Sprinkle the rest of the chips on top. Smooth the surface.
Bake 12 to 16 minutes until edges set and the center looks a touch soft. Cool in the pan.
Lift out, slice nine squares, and enjoy. For extra gooey texture chill the pan for thirty minutes before cutting.