Preheat the oven to 350°F (175°C) and grease a 9 x 13-inch baking pan. Set aside.
2️⃣ Cream the Butter and Sugar 🧈🍬
In a large bowl, cream together the softened butter and brown sugar until smooth and creamy.
Beat in the peanut butter, eggs, and vanilla extract until everything is well combined.
3️⃣ Mix the Dry Ingredients 🍞
In a separate bowl, stir together the all-purpose flour and baking soda.
Add the dry ingredients to the butter mixture and stir until fully combined.
4️⃣ Add the Oats, Chocolate Chips, and M&M’s 🍫🍬
Stir in the quick-cooking oats, semi-sweet chocolate chips, and M&M candies until everything is evenly distributed in the dough.
5️⃣ Press the Dough 🍪
Press the cookie dough mixture evenly into the prepared baking pan, making sure it’s spread out evenly.
If desired, sprinkle additional M&M candies on top and gently press them into the dough.
6️⃣ Bake the Bars 🍪
Bake in the preheated oven for 14–16 minutes, or until the edges are slightly browned and a toothpick inserted into the center comes out clean. Be careful not to overbake.
7️⃣ Cool & Serve 🍽️
Remove from the oven and let the cookie bars cool slightly in the pan.
For best results, allow them to cool completely before slicing, although it can be tempting to dig in right away!
