Sugar Cookie Bars Vanilla Frosting

The smell of butter and sugar creaming together still pulls me back to my tiny first apartment kitchen. I was nineteen, had zero counter space, and decided to bake something for my new roommates. These sugar cookie bars came out of that kitchen with barely room to breathe, and everyone kept coming back for just one more square.

Last summer I made three pans for a neighborhood block party and watched the entire platter disappear in under twenty minutes. My neighbor asked for the recipe before even finishing her first bite, with frosting still on her lip.

Ingredients

• Unsalted butter: Room temperature butter creates the perfect tender crumb, so set it out early
• Granulated sugar: Creaming this with butter builds the airy structure that makes these bars so light
• Large eggs: Room temperature eggs incorporate better and prevent the batter from separating
• Vanilla extract: Use pure vanilla for that warm, comforting flavor we all crave
• All-purpose flour: Provides the structure while keeping things tender
• Baking powder: Gives just enough lift without making the bars too cakey
• Salt: Balances sweetness and brings all the flavors forward

Instructions

Preheat and prep:

Set your oven to 350°F and line a 9x13 pan with parchment paper, letting the edges hang over like handles

Cream the butter and sugar:

Beat them together for a full 2-3 minutes until the mixture turns pale and fluffy

Add eggs and vanilla:

Drop in the eggs one at a time, letting each disappear completely before adding the next

Whisk the dry ingredients:

Combine flour, baking powder, and salt in a separate bowl so everything distributes evenly

Combine the mixtures:

Pour the dry ingredients into the wet mixture and stir gently until just combined

Spread and bake:

Press the dough into your prepared pan and bake for 18 to 22 minutes until edges turn golden

Make the frosting:

Beat the butter until creamy, then sift in powdered sugar before adding milk and vanilla

Frost and serve:

Spread the frosting over completely cooled bars, add sprinkles if you want, then slice into squares

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My daughter now requests these for every school bake sale, and I have to admit I eat at least two bars before they even leave the house.

Making These Your Own

Once I added almond extract instead of vanilla and created a whole new favorite version.

Storage Secrets

These bars keep beautifully in an airtight container for up to three days, though they rarely last that long in my house.

Frosting Fun

Divide the frosting and tint each portion with food coloring for holiday celebrations. Add sprinkles while the frosting is still wet so they stick.

• Use an offset spatula for perfectly smooth frosting
• Chill the frosted bars for 15 minutes before cutting to get clean edges
• Bring bars to room temperature before serving for the best texture

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Theres something so comforting about a pan of these bars cooling on the counter, ready to make someone is day a little sweeter.

Recipe Questions & Answers

→ How do I know when the bars are done baking?

The edges should be lightly golden while the center remains slightly soft. The bars will continue setting as they cool, so avoid overbaking to maintain their tender texture.

→ Can I make these ahead of time?

Yes, bake and cool the bars completely, then store unfrosted in an airtight container for up to 2 days. Add frosting shortly before serving for the freshest taste and texture.

→ What's the best way to cut clean squares?

Let the frosted bars chill for 30 minutes in the refrigerator, then use a sharp knife wiped clean between cuts. The parchment overhang helps lift the entire batch out easily.

→ Can I freeze these sugar cookie bars?

Absolutely. Wrap unfrosted bars tightly in plastic and foil, then freeze for up to 3 months. Thaw overnight at room temperature before frosting and serving.

→ How do I store frosted bars?

Keep in an airtight container at room temperature for up to 3 days. Place parchment paper between layers if stacking to prevent the frosting from sticking.