1/2 cup butter, room temp 1 cup sugar, granulated 1/4 cup sugar, dark brown 1 large egg, room temp 1 TBS vanilla extract 1 tsp salt, coarse 1/4 tsp baking soda 1.5 cups flour 1/2 cup M&Ms, coarsely chopped Heat oven to 350, line 2 sheet pans w/parchment Whisk together by hand butter, sugar, egg, […]