Vanilla Butter Shortbread Cookies
These slice-and-bake cookies use butter for tenderness, powdered sugar for a fine crumb, and a small amount of cornstarch for a delicate snap. Chilling the shaped dough controls spreading and makes twelve evenly sized rounds easier to cut.
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Recipe details
- Yield: 12 cookies
- Prep: 15 minutes
- Chill: 1 hour
- Bake: 13–16 minutes
- Equipment: mixer, bowl, spatula, plastic-free reusable wrap or parchment, ruler, sharp knife, sheet pan, parchment, cooling rack
Ingredients
- 1/2 cup unsalted butter, softened to about 65°F
- 1/3 cup powdered sugar, sifted
- 1 teaspoon vanilla extract
- 1 cup all-purpose flour
- 2 tablespoons cornstarch
- 1/4 teaspoon fine salt
Method
- Beat butter and powdered sugar on medium-low until smooth and creamy, about 1 minute. Do not whip until fluffy. Mix in vanilla.
- Whisk flour, cornstarch, and salt in a second bowl. Add to the butter mixture in two portions on low speed. Stop when moist clumps form; press them together with a spatula.
- Shape the dough into a compact log 6 inches long and about 1 1/2 inches wide. Wrap and refrigerate for 1 hour, until firm.
- Heat the oven to 325°F. Line a sheet pan with parchment. Mark the log at 1/2-inch intervals, then cut twelve rounds. Place them 2 inches apart.
- Bake 13–16 minutes, rotating once, until surfaces look dry and the lower edges are pale gold. The centers should feel set when touched lightly but should not brown deeply.
- Cool on the pan for 5 minutes, then transfer carefully to a rack and cool completely.
Ingredient functions and cues
Butter supplies flavor and limits gluten development. Powdered sugar dissolves readily and often contains a little starch, supporting a fine texture. Added cornstarch further tenderizes the dough. The low oven temperature dries the cookies while preserving their pale color.
Proper dough looks crumbly in the mixer but holds when squeezed. It should not be sticky or greasy. The chilled log must feel firm from edge to center before slicing. Finished cookies are fragile while hot and become crisp as they cool.
Troubleshooting and substitutions
Cookies that spread had warm dough or overly soft butter; chill sliced rounds for 15 minutes before baking the next tray. A tough cookie comes from prolonged mixing after flour is added. If the log cracks during slicing, let it stand 3–5 minutes, then cut with a gentle sawing motion. Press minor edge cracks closed rather than adding water.
Salted butter can replace unsalted butter only if the added salt is omitted. One-half teaspoon almond extract may replace half the vanilla, but check allergy needs. Margarine, whipped butter, liquid oil, and gluten-free flour are not direct substitutes because their water content or structure differs.
Storage and safety
Cool completely and store airtight at room temperature for up to 5 days. Freeze the wrapped unsliced log for up to 1 month; thaw overnight in the refrigerator before slicing. Baked cookies may also be frozen for 1 month. The dough contains no egg but raw flour should not be tasted. Check dairy and wheat allergen requirements before serving.
