To make a whole wheat tart crust, first you need to prepare the crust. First, you'll need 2 tablespoons of butter, 1 tablespoon of sugar, and 1 teaspoon of salt. Then, mix the butter and sugar together until they're light and fluffy. Next, add the flour and mix until it's completely incorporated. Finally, pour the mixture into the tart shell and bake it in the oven for 20 to 25 minutes.