Ingredients
Scale
- Bars
- 2 sticks unsalted butter, room temperature
- 2 cups granulated sugar
- 4 large eggs
- 1 tablespoon pure vanilla extract
- 5 cups all-purpose flour
- ½ teaspoon kosher salt
- ½ teaspoon baking soda
- Frosting
- 1 stick unsalted butter, room temperature
- ½ cup vegetable shortening
- 1 tablespoon pure vanilla extract
- 4 heaping cups confectioners’ sugar
- 2–4 tablespoons milk (I used 2 tablespoons skim)
- Rainbow sprinkles
Instructions
- Make the bars. Preheat oven to 375 degrees F. Butter a rimmed sheet pan or cookie sheet. Line it with parchment, then butter the parchment.
- In a large bowl, mix the butter and sugar until light and fluffy. I did this with a wooden spurtle, but a hand or stand mixer would work too. Add eggs and mix to combine. Add vanilla and mix until fully incorporated. In a medium bowl, stir together flour, salt, and baking soda. Add to butter mixture and mix until a thick dough comes together.
- Dump the dough into the prepared pan and spread it evenly using spoon and fingers. Bake for about 15 minutes, until lightly golden brown, quite firm to the touch, and a toothpick inserted in the center comes out with only a few moist crumbs. Cool completely in pan.
- Make the frosting. In a large bowl, using a hand mixer, a stand mixer would also work, cream butter and shortening until light and fluffy. Add vanilla and confectioners’ sugar. Beat until mixture forms dry clumps. Add milk 1 tablespoon at a time, until a thick and creamy buttercream results. Spread frosting over cooled bars. Sprinkle sprinkles over top and gently press into the frosting. I love sprinkles and really think they add pizazz to the look and texture of the bars.
- Using a sharp knife, cut into 32 squares, 4 bars on the short side, 8 on the long side. May be stored at room temperature for up to 3 days or in the freezer for up to 4 months, wrapped in parchment and foil and placed in a zipper bag. Thaw at room temperature for several hours.
Notes
Recipe adapted from A Little Bit Crunchy
- Prep Time: 20 mins
- Cook Time: 15 mins