Go Back
+ squares
Red, white and blue sourdough blondies
0.0 from 0 votes

Patriotic Sourdough Blondies (4th of July Dessert)

These Patriotic Sourdough Blondies are soft, chewy, and packed with red, white, and blue M&Ms, making them the perfect easy 4th of July dessert for summer celebrations.

Prep Time 15 mins
Cook Time 26 mins
Total Time 41 mins
Course: Dessert
Cuisine: American
Keyword: Patriotic sourdough blondies
Servings: squares

Save This Recipe

Enter your email and we'll send this recipe straight to your inbox! Plus get our latest recipes delivered weekly.

Equipment

  • 1 metal 9x9-inch baking pan
  • Parchment paper
  • Food scale
  • Mixing bowl

Ingredients

Wet Ingredients

  • 113 grams unsalted butter (melted)
  • 135 grams brown sugar (light or dark)
  • 65 grams sugar
  • 1 large egg (room temperature)
  • 7 grams vanilla extract
  • 100 grams sourdough discard (room temperature )

Dry Ingredients

  • 140 grams all-purpose flour
  • 3 grams baking powder
  • 2 grams salt
  • 1 teaspoon cornstarch
  • 80 grams mini semi-sweet chocolate chips (or regular size)
  • 100 grams patriotic M&Ms

Instructions

  1. Preheat the oven to 175°C (350°F). Line a 9-inch square baking pan with parchment paper (leave enough overhang to remove the blondies easily).
  2. In a medium saucepan, melt the butter over medium heat. Once melted, remove it from the heat and let it cool slightly.
  3. To a mixing bowl add the brown sugar, granulated sugar, and the cooled melted butter and whisk until well combined (2-3 minutes).
  4. Whisk in the egg and vanilla extract until fully incorporated, then add the sourdough discard and stir just until combined.
  5. Whisk together the flour, baking powder, salt, and cornstarch in a separate bowl.
  6. Add the dry ingredients to the wet ingredients in two additions, stirring just until combined. Gently fold in the chocolate chips and M&Ms (reserve about 20 grams of chocolate chips and M&Ms to sprinkle over top of the batter).
  7. Pour the batter into the prepared baking pan and spread it evenly. Sprinkle the reserved chocolate chips and M&Ms over top.
  8. Bake for 23-26 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs (but not wet batter).
  9. Allow the blondies to cool completely in the pan before cutting them into squares. Enjoy!
  10. Patriotic sourdough blondies last 2-3 days on the counter wrapped tightly or in an airtight container.

Notes

Sourdough discard: I recommend using discard no more than a week old as this may result in a sour result.

Cool Completely: Allow the blondies to cool completely in the pan before cutting to prevent them from falling apart.

QR Code linking back to recipe