Preheat oven to 350 degrees and prepare a 8×8 baking dish with cooking spray.
Add all dry ingredients for crust together in a mixing bowl. Drizzle on vanilla extract.
Using a pastry cutter cut butter into dry ingredients (or use your hand) until it is very crumbly when you squish it in your hand it should hold together.
Dump Crumbly mixture into prepared 8×8 pan and press down evenly and firmly on bottom of pan. (I put my hand inside of a plastic sandwich bag to keep this less messy)
Bake crust in 350 degree oven for 12-15 minutes. You don’t want it to be browned or even golden just barely set. I only baked mine for 13 minutes.
While crust is baking, mix up the filling.
Combine lemon juice, lemon zest, half and half, flour, sugar and eggs and whisk until all lumps are gone.
Pour filling mixture onto pre-baked crust and immediately return to the oven for 15-20 minutes or until the top has just set and is not jiggly.
Let cool completely before dusting with powdered sugar.
Cut into small squares and Enjoy!
Recipe by Real Life Dinner at https://reallifedinner.com/tart-lemon-bars-with-melt-in-your-mouth-crust-tmh/