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