INGREDIENTS
1 cup
butter, softened
1 cup
light brown sugar
1/2 cup
granulated sugar
1
large egg
1
large egg yolk
1 tbsp
vanilla extract
2 cups
All-Purpose Flour
1 cup
quick-cooking or old-fashioned oats
1 tsp
baking powder
1 tsp
baking soda
1 tsp
salt
1 1/2 cups
miniature semisweet chocolate chips
1 1/2 cups
miniature M&Ms