1-First Step: Mise en Place and Creaming Preheat your oven to 325°F (160°C). Let 1 cup unsalted butter soften at room temperature for 30 minutes. In a large bowl, beat butter with ½ cup powdered sugar using a hand mixer on medium speed until light and fluffy, about 2-3 minutes. This creates air pockets for tenderness. For vegan, use plant butter here.

2-Second Step: Incorporate Flour Sift 2 cups all-purpose flour to avoid lumps. Gradually add to the butter mixture on low speed, mixing just until a soft dough forms. Do not overmix to prevent tough shortbread. For gluten-free, use the blend now. The dough should hold together when squeezed but feel crumbly.

3-Third Step: Shape the Dough Two options: For bars, line an 8-inch square pan with parchment. Press dough evenly into the pan, about ½-inch thick. Prick all over with a fork to prevent puffing. For individual cookies, roll dough between parchment to ¼-inch thick, chill 15 minutes, then cut shapes with cookie cutters.

4-Fourth Step: Chill and Bake Chill shaped dough 30 minutes in the fridge. This firms the butter for crisp edges. Bake pan version 30-35 minutes until edges are pale golden. For cutouts on parchment-lined sheets, bake 15-20 minutes. Rotate halfway for even browning. Cool in pan or on racks 10 minutes before cutting.

5-Final Step: Cool, Cut, and Serve Let cool completely for clean cuts. Dust with powdered sugar if desired. Store as below. Adapt for low-cal by brushing with milk before baking. Pair with tea or as a base for ice cream sandwiches.