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Gooey M&M Cookie Bars Recipe

Gooey M&M Cookie Bars Recipe


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4.7 from 35 reviews

  • Total Time: 45 minutes
  • Yield: 12 1x

Description

Irresistible m&m cookie bars deliver childhood nostalgia with rich, chocolatey goodness packed into each sweet square. Chocolate chips and colorful candy pieces create a delightful dessert you’ll crave again and again.


Ingredients

Scale

Main Ingredients:

  • 2.34 cups (343g) all-purpose flour
  • 1 cup (226g) unsalted butter, melted and slightly cooled
  • 1 cup (200g) packed brown sugar
  • 1.14 cups (260g) M&Ms, mini or regular size
  • 0.75 cup (135g) semi-sweet chocolate chips
  • 2 large eggs, at room temperature

Wet Ingredients:

  • 2 teaspoons pure vanilla extract

Dry Ingredients:

  • 1.5 teaspoons cornstarch
  • 1 teaspoon baking soda
  • 0.5 teaspoon salt
  • 0.5 cup (100g) granulated sugar

Instructions

  1. Prepare the oven environment by heating to 350°F and positioning a parchment paper liner inside a 9×13 inch baking vessel to ensure easy extraction of the cookie bars.
  2. Create a powdery foundation by thoroughly combining flour, cornstarch, baking soda, and salt in a medium mixing bowl, whisking until uniformly integrated.
  3. Transform melted butter into a silky base by vigorously blending brown and granulated sugars until the mixture achieves a smooth, glossy consistency.
  4. Enrich the butter-sugar mixture by incorporating eggs individually, ensuring each is fully integrated before adding the next, then introduce vanilla extract for aromatic depth.
  5. Gently fold the dry ingredient mixture into the wet ingredients, creating a cohesive dough that maintains a light texture.
  6. Generously distribute M&Ms and chocolate chips throughout the dough, ensuring even dispersal for consistent flavor and visual appeal in each bar.
  7. Transfer the dough into the prepared baking pan, carefully spreading the mixture to create an even layer that will bake uniformly.
  8. Position the pan in the preheated oven and bake for 25-30 minutes, watching for a golden-brown surface that indicates perfect doneness.
  9. Remove from the oven and allow the cookie bars to cool completely within the pan, which helps them set and makes cutting easier.
  10. Once thoroughly cooled, slice into rectangular bars, revealing the gooey, chocolate-studded interior.

Notes

  • Customize M&Ms by choosing seasonal colors for festive look or matching party themes.
  • Chill dough for 30 minutes before baking to prevent excessive spreading and create thicker bars.
  • Replace some M&Ms with nuts like pecans or almonds for added texture and nutty flavor complexity.
  • Use gluten-free flour blend to make recipe friendly for those with wheat sensitivities.
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Desserts, Snacks
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 12
  • Calories: 340
  • Sugar: 22g
  • Sodium: 180mg
  • Fat: 16g
  • Saturated Fat: 10g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 47g
  • Fiber: 1g
  • Protein: 3g
  • Cholesterol: 50mg