1-First Step: Preparation and Mise en Place Before you begin baking, gather all your ingredients and equipment. You’ll need mixing bowls, measuring cups and spoons, a hand mixer or stand mixer, baking sheets, and parchment paper. Bring your butter and egg to room temperature for best results. Room temperature ingredients blend more easily, creating a smoother cookie dough. Preheat your oven to 375°F (190°C) and line your baking sheets with parchment paper or silicone baking mats for easy cleanup.

2-Second Step: Creaming Butter and Sugars In a large mixing bowl, combine the softened butter with both granulated and brown sugar. Using a hand mixer or stand mixer with the paddle attachment, beat on medium speed for 2-3 minutes until the mixture becomes light and fluffy. This process incorporates air into the dough, which helps create the desired texture. The creaming step is crucial for that perfect cookie consistency that’s slightly crisp on the edges and soft in the center. Scrape down the sides of the bowl to ensure all ingredients are incorporated evenly.

3-Third Step: Adding Wet Ingredients Add the egg and vanilla extract to the creamed butter and sugar mixture. Beat on medium speed for another minute until the egg is fully incorporated and the mixture looks smooth and glossy. This step emulsifies the ingredients, creating a consistent base for your cookie dough. Make sure to scrape down the bowl again to catch any butter or sugar that might have stuck to the sides. If you’re making vegan cookies using a flax egg, add it now and mix thoroughly until it’s well distributed throughout the batter.

4-Fourth Step: Incorporating Dry Ingredients In a separate medium bowl, whisk together the flour, baking soda, and salt. This ensures the leavening agent is evenly distributed throughout the flour. Gradually add the dry ingredients to the wet mixture, mixing on low speed just until combined. Avoid overmixing at this stage, as it can develop gluten and result in tough cookies. The dough should be thick and somewhat sticky but hold together well. For extra flavor, you can add a pinch of cinnamon or nutmeg to the dry ingredients for a subtle festive spice note.

5-Fifth Step: Adding Festive Mix-Ins Remove the bowl from the mixer and fold in the holiday M&M’s using a silicone spatula or wooden spoon. Gently mix until the candies are evenly distributed throughout the dough. Be careful not to overmix, which could cause the M&M’s to break or their colors to bleed into the dough. For the most vibrant appearance, reserve about 1/4 cup of the M&M’s to press into the tops of the cookies just before baking. This ensures the colorful candies remain visible and attractive on each finished cookie.

6-Sixth Step: Scooping and Baking Use a cookie scoop or rounded tablespoon to portion dough onto your prepared baking sheets, placing them about 2 inches apart to allow for spreading. For uniform cookies, try to make each portion the same size. If desired, press a few extra M&M’s into the tops of each dough ball for a more festive appearance. Bake in the preheated oven for 9-11 minutes, or until the edges are lightly golden but the centers still look slightly underbaked. They will continue to cook on the baking sheet after removal.

7-Final Step: Cooling and Serving Allow the cookies to cool on the baking sheet for 2-3 minutes before transferring them to a wire rack to cool completely. This short resting period helps them set properly while maintaining their soft centers. Once completely cooled, store them in an airtight container or serve immediately on a festive holiday plate. These cookies make excellent gifts when packaged in clear bags tied with ribbon or arranged in decorative tins. They pair wonderfully with a glass of cold milk, hot cocoa, or your favorite holiday beverage.