1 uncooked piecrust
1 cup sugar
2/3 cup dark Karo syrup
1 cup pecans, broken up
1/2 cup margarine, melted
1 teaspoon vanilla
Spray the slow cooker with nonstick cooking spray.
Place uncooked piecrust in the slow cooker and press up the edges about 1/2 inch up the sides.
In a medium-mixing bowl, stir the remaining ingredients until well mixed. Pour on top of the piecrust.
Cover and cook on HIGH for 2 to 3 hours