Ingredients
Equipment
Method
Make the Dough
- In a stand mixer, beat room temperature unsalted butter and granulated sugar on medium speed until light and fluffy, about 3 minutes.
- Add the egg, vanilla extract, and sour cream. Mix until well combined, scraping down sides as needed.
- In a separate bowl, whisk together flour, baking powder, and salt. Add to wet mixture on low speed until just combined.
- Wrap dough in plastic and chill in refrigerator for at least 1 hour to prevent spreading.
Bake Cookies
- Preheat oven to 350°F. Roll chilled dough to 1/4-inch thickness on floured surface. Cut heart shapes.
- Place on parchment-lined sheet. Bake 8-10 minutes until set and matte. Cool on wire rack.
Prepare Icing
- Whisk powdered sugar, meringue powder, water, and corn syrup until thick and glossy, about 5 minutes.
- Divide into bowls, add gel coloring. Thin some with water for flooding (15-second consistency).
Decorate Cookies
- Outline heart edges with thicker icing. Fill centers with thinner icing, using toothpick to pop bubbles.
- Create designs like swirled hearts by piping colored dots and dragging toothpick through wet icing. Let dry completely, 6-12 hours.
Nutrition
Calories: 120kcalCarbohydrates: 18gProtein: 2gFat: 5g
Notes
These cookies hold their shape thanks to sour cream. For a tender crumb, do not overwork dough. Royal icing dries hard for stacking and gifting. If icing is too thick, add water; if too thin, add powdered sugar. Store decorated cookies in airtight container at room temperature up to 1 week or freeze up to 3 months. Vegan: use vegan butter and flax egg; gluten-free: substitute 1:1 baking flour.
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