1. Cream the Sweet Base: In a spacious mixing bowl, combine the softened butter with both the light brown sugar and granulated sugar. Add the egg and vanilla extract. Beat these ingredients together on medium-high speed for about 4 minutes until the mixture is beautifully creamy and well combined. Don't forget to pause and scrape down the sides of the bowl to ensure everything gets perfectly mixed.
2. Blend in the Dry Goodness: Gradually add the all-purpose flour, instant vanilla pudding mix, baking soda, and your optional pinch of salt to the wet mixture. Mix on a low speed just until everything comes together and is barely combined—overmixing can make cookies tough! Scrape the sides of the bowl once more.
3. Fold in the Festive Add-ins: Gently incorporate the semi-sweet chocolate chips and ¾ cup of the M&M’s into your cookie dough. Mix on low speed for only about 30 seconds, just enough to distribute them evenly throughout the dough.
4. Shape and Adorn for Love: Using a ¼-cup scoop or your hands, form about 15 equally sized mounds of dough. Roll each into a ball, then lightly flatten it. For that extra pop of color and charm, press an additional tablespoon of M&M’s onto the top of each cookie mound before chilling.
5. Chill for Perfect Texture: Arrange your shaped cookie dough mounds on a large plate or tray. Cover them tightly with plastic wrap and refrigerate for a minimum of 2 hours. This crucial step helps prevent spreading and ensures your cookies are wonderfully thick and soft. You can even store the dough in the fridge for up to 5 days, making it perfect for fresh-baked cookies anytime!
6. Preheat and Prepare: When you’re ready to bake, preheat your oven to 350°F (175°C). Line a baking sheet with a silicone mat or parchment paper to prevent sticking. Place the chilled cookie dough mounds onto the prepared baking sheet, ensuring they are spaced at least 2 inches apart.
7. Bake to Golden Perfection: Bake for approximately 11 minutes. The cookies are ready when their edges appear set, but their centers still look slightly soft, a bit pale, and glossy. Remember, they will continue to firm up as they cool, so don’t overbake!
8. Cool and Savor: Allow the cookies to cool on the baking sheet for about 10 minutes. This allows them to finish setting and develop that perfect soft, chewy texture. Then, transfer them to a wire rack to cool completely, or enjoy them warm for a truly comforting treat!