Easy frosted sugar cookie bars are made from scratch and as delicious as traditional cut-out sugar cookies, but without all the work! These handheld bars are tasty, easy to serve, and simple to customize with colorful sprinkles.
Preheat your oven to 350˚and line a 9 x 13 baking pan with parchment paper & lightly spray with non-stick spray. Set aside.
To a large mixing bowl, cream the butter and sugar together until light and fluffy.
One at a time, beat the eggs scraping the bowl between additions.
Add in the vanilla extract and mix until combined.
To a small mixing bowl, whisk together the flour, salt, and baking powder.
Pour the flour mixture into the wet mixture and fold with a spatula until just combined. Try to avoid overmixing.
Press the dough evenly into the prepared pan.
Bake at 350˚ for 20 minutes or until the edges are golden. You don't want it to brown.
Remove from the oven and cool completely in the pan on a wire rack.
To make the frosting
While the bars are cooling, add the softened butter to a large mixing bowl and mix until smooth and creamy.
Add in the powdered sugar and mix. It will look crumbly.
Add the vanilla, a pinch of salt, and one tablespoon of the milk. Mix. If it still looks dry, drizzle in another tablespoon of milk. Once it is soft & spreadable, you are done.
Frost the cooled bars with an offset spatula and slice into bars.
If you'd like to switch up the flavors, substitute the vanilla extract for 1/2 teaspoon of lemon or almond extract. Easily switch up the theme of the bars by adding food coloring to the frosting or switching the sprinkles for whichever holiday you're after. Store bars covered at room temperature for up to 4 days. Bars will freeze well frosted. Wrap tightly in plastic wrap then store in a freezer bag for up to a month. When ready to use, thaw on the counter at room temperature.