Peanut Butter M&M Bars

peanut butter, either creamy or chunky will work

butter, softened

brown sugar

eggs

vanilla

all purpose flour (GF Option: gluten-free flour + 1 teaspoon xantham gum OR 2 tablespoons potato starch - unless flour already contains a thickening agent)

oats, uncooked (GF Option: use certified gluten-free oats)

baking soda (GF Option: use a gluten-free brand)

salt

M&M candies (GF Option: Most plain M&M candies are gluten-free, however not all of their candies are. Be sure to use certified gluten-free chocolate candies for a GF Option.)