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stacked M&M Blondies

M&M Blondies

5 from 1 vote
Prep Time 10 mins
Cook Time 25 mins
Cooling Time 15 mins
Course Dessert
Servings 35 squares


  • Hand Mixer or Stand Mixer


  • cups butter, melted, cooled slightly
  • cups brown sugar
  • 3 Tbsp white sugar
  • 3 eggs
  • 1 tbsp vanilla
  • tsp baking soda
  • 4 cups all purpose flour
  • cups M&Ms, divided
  • ½ cup milk chocolate chips


  • Preheat oven to 325°F
  • Line a 15" x 10" cookie sheet with parchment paper, allowing parchment paper to hang over the sides about an inch on each side
  • Beat melted butter and sugars together, until smooth and creamy
  • Beat in eggs and vanilla
  • Add in baking soda
  • Using low speed, beat in flour, ½ cup at a time, until all flour is just incorporated
  • Fold in 1 cup of M&Ms and chocolate chips.
  • Spread batter evenly on cookie sheet.
  • Sprinkle remaining ¼ cup M&Ms over the top of the batter
  • Bake for 25 minutes or until edges are browned. Centre will still be soft
  • Allow to cool in the pan for 15 minutes
  • Remove from pan using parchment paper to help lift the blondies out
  • Cut into 35 squares and serve.
  • Store leftovers in an airtight container at room temperature.