These easy patriotic sugar cookie bars feature soft, buttery layers with a sweet vanilla glaze and festive red, white, and blue sprinkles, perfect for sharing at 4th of July gatherings.
Use softened butter, not melted, for best texture. Avoid overmixing the dough to keep bars tender. Cool bars completely before glazing to prevent melting. If dough is too soft to spread, chill for 10-15 minutes. For gluten-free, substitute flour with a 1:1 gluten-free blend. For dairy-free, use vegan butter and plant-based milk.
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