Crockpot Pecan Pie

1 uncooked piecrust
3 eggs
1 cup sugar
2/3 cup dark Karo syrup
1 cup pecans, broken up
1/2 cup margarine, melted
1 teaspoon vanilla

1. Spray the slow cooker with nonstick cooking spray.
2. Place uncooked piecrust in the slow cooker and press up the edges about 1/2 inch up the sides.
3. In a medium-sized mixing bowl, stir the remaining ingredients until well mixed. Pour on top of the piecrust. 
4. Cover and cook on HIGH for 2 to 3 hours. 

Source: Cherie's Cuisine - Bon Appetit