Preparation Steps

• Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
• In a bowl, whisk together the flour, baking soda, and salt.
• In a separate bowl, combine melted butter, granulated sugar, and brown sugar until well mixed.
• Beat in the vanilla extract and egg until the mixture is smooth.
• Gradually add the dry ingredients to the wet ingredients until combined.
• Fold in the M&M's.
• Scoop tablespoon-sized dough onto prepared baking sheet and bake for 8-10 minutes.
• Allow cookies to cool on the sheet for 5 minutes, then transfer to a wire rack to cool completely.