Step 1

Preheat oven to 350 degrees. Line a 9X13 baking dish with heavy foil or parchment paper with the sides overhanging the dish and spray with cooking spray.

Step 2

In a large bowl, stir together the flour, 1/3 cup sugar, and salt. Cut in 2/3 cup butter until mixture resembles coarse crumbs. You can use a pastry cutter or just two knives. A food processor makes it really easy! Sprinkle the crust mixture evenly over the prepared pan, and press in firmly.

Step 3

Bake for 20 minutes in the preheated oven.

Step 4

While the crust is baking, prepare the filling. In a large bowl mix together the eggs, corn syrup, 1/2 cup white sugar, 1/2 cup brown sugar, 2 tablespoons melted butter and vanilla until smooth. Stir in the chopped pecans. Spread the filling in an even layer over the crust as soon as it comes out of the oven.

Step 5

Bake for 25-30 minutes in the preheated oven, or until set. I usually like things on the rare side and a little gooey but these you want cooked all the way through so make sure the middle is set. If the top starts getting to browned cover with aluminum foil.

Step 6

Allow to cool completely on a wire rack before slicing into bars with a sharp knife. Store at room temperature in an airtight container.