No Cook Peanut Butter Squares

1/2 cup peanut butter
1/2 cup margarine
1 package butterscotch chips
2/3 cup coconut
3 cups miniature colored marshmallows
pinch salt
1 teaspoon vanilla
 
Melt peanut butter, margarine and butterscotch chips  in double boiler. Stir in remaining ingredients. Pour mixture in to 9 x 9 inch greased pan.  Cool in refrigerator.