– 1 cup butter – 1 cup light brown sugar  – ¼ cup sugar – 2 large eggs  – 2 tablespoon molasses – 1 tablespoon vanilla extract – 1 teaspoon baking soda – ½ teaspoon salt – 1⅔ cups all-purpose flour – 3 cups old-fashioned rolled oats – 1½ cups  M&Ms candies