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+ servings
5 from 1 vote
Maple Frosted Walnut Bars
Prep Time
15 mins
Cook Time
35 mins
Total Time
50 mins

These Maple Frosted Walnut Bars are an easy dessert recipe that's perfect for any special occasion!

Course: Dessert
Cuisine: American
Keyword: dessert, dessert bars, nuts
Servings: 18 servings
Calories: 340 kcal
Author: Blair
For the Crust:
  • 1 cup all-purpose flour
  • ½ cup 1 stick butter, softened
For the Filling:
  • 1 ½ cups packed brown sugar
  • 2 tablespoons flour
  • ½ teaspoon vanilla
  • 2 eggs
  • 1 cup finely chopped walnuts
  • ¼ teaspoon baking powder
  • ½ teaspoon salt
For the Maple Frosting:
  • 2 ¼ cups powdered sugar
  • ½ cup packed brown sugar
  • ½ cup 1 stick butter, softened
  • 1/8 teaspoon salt
  • ½ cup maple syrup
  • 1 teaspoon vanilla extract
  • 1-2 tablespoons whole milk as needed to reach desired consistency
  1. Preheat the oven to 350 degrees F. Spray an 8-inch square baking dish with cooking spray and set aside.
Start by Making the Crust:
  1. In a large bowl, use a pastry blender or fork to cut the butter into the flour. Press the mixture into the prepared baking dish. Bake for 12 minutes.

Meanwhile, in a separate bowl, combine filling ingredients.
  1. When the crust comes out of the oven, pour filling over the warm crust and spread evenly. Return dish to oven and bake for an additional 20-25 minutes.
  2. Allow to cool completely before frosting.
For the Maple Frosting:
  1. In a medium bowl, beat sugars, butter, and salt with an electric mixer until combined. While beating, slowly add the maple syrup. Mix in the vanilla and beat on medium-high speed until the frosting is light and fluffy. If necessary, add milk one tablespoon at a time until the frosting reaches a spreadable consistency.

  2. Spread frosting over cooled filling. Cut into squares and serve.
Recipe Notes

* This recipe makes a lot of frosting! If you prefer a thinner layer of frosting on your bars, you can cut the frosting ingredients in half (or only use as much frosting as you like).

Nutrition Facts
Maple Frosted Walnut Bars
Amount Per Serving (1 square)
Calories 340 Calories from Fat 135
% Daily Value*
Fat 15g23%
Saturated Fat 7g44%
Cholesterol 48mg16%
Sodium 85mg4%
Carbohydrates 60g20%
Fiber 0.6g3%
Sugar 44g49%
Protein 2.6g5%
* Percent Daily Values are based on a 2000 calorie diet.