Butterscotch Bars

Directions

1. 1
   let ice cream melt at room temperature.
2. 2
   heat oven to 350* -- coat a jelly roll pan with spray.
3. 3
   line with foil -- extending over the edges and sides --
4. 4
   coat foil with spray.
5. 5
   in medium bowl, whisk flour, salt, baking powder, allspice, and nutmeg --
6. 6
   beat in melted ice cream, scraping down sides of bowl.
7. 7
   at low speed, beat in flour mixture until smooth.
8. 8
   fold in 1 cup butterscotch chips.spread batter in prepared pan --
9. 9
   Bake at 350* until dry to touch.
10. 10
    about 25 minutes.
11. 11
    let cool in pan on rack.
12. 12
    smoothly spread bar with frosting --
13. 13
    melt remaining 1/4 cup butterscotch chips with oil in glass bowl, in microwave oven for about 45 seconds on high --
14. 14
    stir till smooth.
15. 15
    pipe in lines over frosted bars.lightly drag knife across lines --
16. 16
    refrigerate and cut into bars to serve -- .