Pastel colors are showing up everywhere this season — on dresses, decorations, and especially desserts. Inspired by those soft, spring hues, these sugar cookie bars are a simple, crowd-pleasing dessert that combines a tender cookie base with a smooth, colorful buttercream. They’re perfect for holidays, birthday parties, or any time you want a classic sweet with a playful look.
Image above: sugar cookie bars finished with pastel frosting
The recipe below is an adaptation of a popular sugar cookie bar, yielding a large sheet of easy-to-cut bars that keep well and travel nicely. The dough is straightforward to mix, presses evenly into a rimmed baking sheet, and bakes in a short time. A simple buttercream frosting finishes the bars; you can tint it with food coloring for a subtle pastel palette or keep it white for a classic finish.
Sugar Cookie Bars
Recipe adapted from a trusted pastry source
Ingredients:
For the cookie bars:
- 5 cups all-purpose flour
- 1 teaspoon salt
- 1/2 teaspoon baking soda
- 1 cup (2 sticks) unsalted butter, softened
- 2 cups granulated sugar
- 4 large eggs
- 2 teaspoons vanilla extract
- Zest from 1 lemon (optional, for bright flavor)
For the frosting:
- 1 cup (2 sticks) unsalted butter, softened
- 1 teaspoon vanilla extract
- Pinch of salt
- 4 cups confectioners’ (powdered) sugar
- Up to 5 tablespoons milk, cream, or half-and-half to reach desired consistency
- Food coloring (optional) for pastel shades
Preparation:
Preheat the oven to 350°F (175°C). Line a large rimmed baking sheet (approximately 13″ x 18″) with parchment paper and lightly grease the edges so the dough won’t stick.
In a medium bowl, whisk together the flour, salt, and baking soda until evenly combined. Set aside.
In the bowl of a stand mixer or using a hand mixer, cream the softened butter and granulated sugar until light and fluffy, about 2–3 minutes. Add the eggs one at a time, mixing until each is incorporated. Stir in the vanilla extract and lemon zest, if using. With the mixer on low speed, add the flour mixture in batches until just combined; avoid overmixing.
Transfer the dough to the prepared pan. Press the mixture evenly across the pan using your hands, a spatula, or the bottom of a flat glass to create a uniform layer. Bake for 10–15 minutes, or until the edges begin to turn a light golden brown and the top is set. Baking times vary by oven; check frequently after the 10-minute mark.
Remove the pan from the oven and cool completely on a wire rack before frosting. Cooling fully ensures a smooth, non-melting frosting finish.
To make the frosting, beat the softened butter in a clean bowl until smooth. Add the vanilla and pinch of salt. With the mixer on low, gradually beat in the confectioners’ sugar until combined. Add milk a tablespoon at a time until the frosting reaches a spreadable consistency. If you want pastel colors, divide the frosting into small bowls and tint each with a tiny amount of food coloring to get soft shades.
Spread the frosting evenly over the cooled cookie sheet. Use an offset spatula for a smooth top. If you prefer, sprinkle with nonpareils, sanding sugar, or seasonal sprinkles while the frosting is still soft. Chill briefly to set the frosting, then cut into even bars or squares and serve.
Notes and tips: The centers of these bars can remain slightly soft after baking — they will firm up as they cool. If you prefer a firmer, crispier bar, bake a few minutes longer and watch closely to prevent overbrowning. The recipe scales well: halve it for a smaller 9″ x 13″ pan or double it for multiple pans.
These sugar cookie bars are an easy, bake-and-cut treat that combine the nostalgic flavor of sugar cookies with the convenience of a sheet dessert. They’re ideal for gatherings, bake sales, and seasonal celebrations — especially when dressed in soft, springtime pastels.