1-Start with mise en place to keep things smooth. Preheat oven to 350°F. Line a 9×13-inch pan with parchment paper, leaving overhang for easy removal. Soften butter at room temperature for 30-60 minutes. This sugar cookie bars recipe shines with room-temp ingredients for even mixing.

2-First Step: Cream the wet base. In a large bowl, beat 1 cup softened butter, 1 cup granulated sugar, and 1/2 cup powdered sugar until light and fluffy, about 2 minutes with an electric mixer. Scrape sides often. This builds air for soft sugar cookies.

3-Second Step: Add eggs and extracts. Beat in 2 eggs one at a time, then mix in 1 teaspoon vanilla extract and 1/2 teaspoon almond extract. Batter may look curdled; that’s normal and fixes with dry ingredients.

4-Third Step: Combine dry ingredients. In a separate bowl, whisk 2 1/2 cups all-purpose flour, 1 teaspoon baking powder, and 1/2 teaspoon salt. Gradually stir into wet mixture on low speed until just combined. Avoid overmixing to prevent tough bars.

5-Fourth Step: Spread evenly. Transfer dough to prepared pan. Use wet hands or offset spatula to press into an even layer, about 1/2-inch thick. Smooth top for uniform baking.

6-Fifth Step: Bake the bars. Place in preheated oven for 18-22 minutes. Edges turn golden, center sets but stays soft. Rotate pan halfway for even heat. Cool in pan on wire rack for 1 hour, then lift out to cool fully, about 2 hours total. Rushing leads to crumbling.

7-Sixth Step: Prepare frosting. Beat 1/2 cup softened butter until creamy. Gradually add 4 cups powdered sugar, alternating with 1/4 cup milk, 1 teaspoon vanilla, and pinch of salt. Whip 2-3 minutes for fluffy texture. Adjust milk for spreadability.

8-Final Step: Frost and cut. Spread frosting evenly over cooled bars. Chill 30 minutes to set. Cut into 24 squares. Serve at room temp for best chew. Total time: 4 hours including cooling; active 30 minutes.