Indulge in these gooey butter tarts that are absolutely scrumptious, yet so simple to make.
Preheat oven to 375° F.
Line tart shells on a baking sheet and place desired amount of raisins in each.
Place eggs, brown sugar, salt, corn syrup, margarine, and vanilla into a blender and blend until smooth.
Pour filling evenly into tart shells. Sprinkle chopped walnuts on top.
Bake for 15-20 minutes. Let cool completely.