These M&M cookie bars are moist, chewy, and the perfect solution for using up leftover egg yolks! With a touch of creativity, you can customize them for the holidays or any occasion. A simple, delicious way to reduce food waste while baking up some joy.
Preheat your oven to 350°F (175°C). Line a 9x13-inch (23x33 cm) baking pan with parchment paper, leaving an overhang for easy removal.
In a large mixing bowl, whisk together 1 cup Unsalted butter, melted and slightly cooled, 1 cup Brown sugar, and ½ cup Granulated sugar until smooth.
1 cup Unsalted butter, melted and slightly cooled, 1 cup Brown sugar, ½ cup Granulated sugar
Add 6 egg yolks and 1 tsp Vanilla extract, whisking until fully combined.
6 egg yolks, 1 tsp Vanilla extract
In a separate bowl, whisk together 2 cups All-purpose flour, 1 tsp Baking powder, and ½ tsp Salt.
2 cups All-purpose flour, 1 tsp Baking powder, ½ tsp Salt
Gradually add the dry ingredients to the wet mixture, stirring just until combined. Gently fold in the 1 cup M&M’s .
1 cup M&M’s
Pour the batter into the prepared baking pan and spread it evenly with a spatula. Scatter a few extra M&M’s on top for decoration.
Bake for 30-45 minutes, or until the edges are golden and a toothpick inserted in the center comes out with a few moist crumbs. Do not overbake to keep the bars chewy.
Let the bars cool completely in the pan, then lift them out using the parchment overhang. Slice into squares or rectangles.