Yield: 24 servings

Mud Hen Bars

Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes

Buttery cookie dough meets gooey marshmallow, melty chocolate chips, and brown sugar meringue - need I say more? These Mud Hen Bars taste like a dream and are extra impressive to boot. They’ll quickly become your new favorite dessert.


  • ¼ cup butter flavored shortening
  • ¼ cup unsalted butter, softened
  • 1 cup granulated sugar
  • 1 large egg, whole
  • 2 large eggs, separated
  • 1 ½ cup all-purpose flour
  • 1 teaspoon baking powder
  • ¼ teaspoon kosher salt
  • 1 ½ cups mini marshmallows
  • ¾ cup mini chocolate chips
  • 1 cup light brown sugar, packed


  1. Preheat oven to 350°F. Line a 13x9 baking dish with parchment paper. Set aside.
  2. In a large mixing bowl, beat together the shortening, butter, and sugar until creamy. Beat in the whole egg, and the two egg YOLKS.
  3. Slowly add in the flour, baking powder, and salt. Combine until fully blended.
  4. Press batter into prepared baking dish. Top with marshmallows and chocolate chips.
  5. In a separate clean and dry mixing bowl, beat the two egg whites until stiff. Fold in the brown sugar and pour over the stop of the bars. Spread gently, making sure it touches the sides of the pan (this will help it rise during baking, and not shrink).
  6. Bake for 35-40 minutes, until the meringue on top is lightly browned. Remove from oven and cool completely.
  7. Cut into bars and enjoy. We prefer to keep these chilled in the refrigerator, they taste great cold!


  • The cookie dough is thick, so instead of pouring it into the baking pan, you’ll need to spread it, and your hands are the best tool for the job.
  • If you’re using a smaller baking dish, you might need to bake the bars for more than 40 minutes. 
  • Make sure the raw meringue touches all edges of the dish for the best rise.
  • Store any leftover Mud Hen Bars in an airtight container in the fridge or freezer.
  • See blog post for more recipe tips and tricks.
  • Nutrition Information:



    Serving Size:

    1 bar

    Amount Per Serving: Calories: 173Total Fat: 7gSaturated Fat: 4gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 34mgSodium: 63mgCarbohydrates: 28gFiber: 1gSugar: 21gProtein: 2g

    *Nutrition facts are an estimate and not guaranteed to be accurate. Please see a registered dietitian for special diet advice.

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