Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a large mixing bowl, cream together softened butter and powdered sugar until the mixture is pale and fluffy, about 2-3 minutes. You'll notice it lightening in color and feeling smooth to the touch.
Gradually add the all-purpose flour and a pinch of salt to the butter mixture. Mix until just combined and a dough starts to form—that should take about 30 seconds to 1 minute. The dough will be crumbly but should hold together when pressed.
Gather the dough into a ball and press it evenly into a 9-inch round disk on your prepared baking sheet. Use your hands or the bottom of a glass to smooth the surface, creating an even layer about 1/2 inch thick.
Bake the shortbread crust in the preheated oven for about 15-20 minutes, or until the edges are lightly golden. The smell of buttery goodness will fill the kitchen as it bakes.
Once baked, remove the shortbread from the oven and let it cool on the baking sheet for 10 minutes. Then transfer it to a wire rack to cool completely; it should feel firm and slightly crumbly to the touch.
While the crust cools, prepare the strawberries by slicing them into thin, even pieces. They should be vibrant and juicy, ready for the topping.
Spread the sliced strawberries evenly over the cooled shortbread base, creating a colorful, eye-catching layer that looks like a berry mosaic.
Sprinkle a tablespoon of granulated sugar over the strawberries to enhance their natural sweetness and add a subtle shimmer to the topping.
Return the assembled tart to the oven at 350°F for an additional 5-8 minutes, just until the berries begin to soften slightly and the sugar glaze develops a gentle shine.
Remove the cookies from the oven and let them cool for at least 15 minutes before slicing. The berries will settle into a glossy, vibrant topping, and the shortbread will be crisp around the edges.
Slice into wedges and serve these bright, buttery cookies with their juicy strawberry topping. Enjoy the perfect balance of crumbly shortbread and fresh fruit in every bite.