Making Butter Tart Squares is a straightforward process. Follow these steps, and you’ll have a delicious dessert in no time:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Prepare an 8-inch square baking pan by greasing it lightly or lining it with parchment paper.
2. Make the Crust: In a mixing bowl, combine the flour and sugar. Add the softened butter and mix until the mixture resembles coarse crumbs.
3. Press the Crust: Press the crust mixture into the bottom of the prepared baking pan evenly. Use your fingers or the back of a measuring cup to ensure it’s compact and flat.
4. Bake the Crust: Place the crust in the preheated oven and bake for 15-20 minutes or until lightly golden. Remove from the oven and allow to cool slightly.
5. Prepare the Filling: In another bowl, mix together the brown sugar, corn syrup, melted butter, eggs, and vanilla extract. Stir until well combined and smooth.
6. Add Optional Ingredients: If desired, fold in the raisins or chopped pecans to the filling mixture.
7. Pour Filling: Once the crust has cooled slightly, pour the filling evenly over the baked crust.
8. Bake Again: Return the pan to the oven and bake for another 15-20 minutes, or until the filling is set and the top starts to bubble.
9. Cool: Remove from the oven and allow to cool in the pan for about 15-20 minutes. Then transfer to a wire rack to cool completely.
10. Slice: Once cooled, cut into squares and serve.