INGREDIENTS
1/2 cup
or 115g) salted butter, softened to room temperature*
1/2 cup
packed light brown sugar
1/4 cup
granulated sugar
1
large egg
3/4 cup
creamy peanut butter
1 tsp
vanilla extract
1/2 tsp
baking soda
1
and 1/4 cups (160g) all purpose flour
1
and 1/2 cups (300g) M&Ms