Preheat the oven to 350 degrees Fahrenheit. Line an eight-inch square baking dish with parchment paper and set aside.

Cream butter and powdered sugar until smooth. Add flour and salt. Mix until a dough forms.

Press the crust mixture into the prepared pan in an even layer. Bake for 20 minutes until the edges are slightly golden.

While the crust bakes, blend lemon juice, zest, strawberries, sugar, and eggs until smooth. Add flour, baking powder, and salt. Mix until well combined.

Pour the filling over the hot crust. Bake for another 30 to 35 minutes. The center should jiggle slightly but not look liquid.

Let the bars cool at room temperature for one hour. Chill in the fridge for at least one more hour.

Lift the bars out of the pan. Use a wet, sharp knife to slice cleanly. Dust with powdered sugar before serving.