Zucchini Brownies with Caramel Frosting

Mix together first 5 ingredients (the dry ingredients).

Cream together butter, sugars, eggs and vanilla.

Combine the 2 mixtures.

Gradually add zucchini, walnuts and butterscotch chips.

Spread into a 10×15 pan. Bake at 375F for 20-25 minutes.

Frost cooled bars with Caramel Frosting.

To make the frosting, melt butter over low heat in a saucepan. Add brown sugar and increase heat and bring to a boil for 2 minutes. Add milk and bring to second boil. Remove from heat. Add enough powdered sugar to reach a spreadable consistency. Spread onto cooled bars. Then cut and serve.