Butterscotch Cookie Bars

I made these twice in the last two weeks and they are delicious! They are a little more chewy (like brownies) than you would expect. Mine cooked for 23 minutes. Enjoy!

INGREDIENTS
1 cup butterscotch chips
1/4 cup butter
2 eggs
1/2 teaspoon vanilla extract
3/4 cup all-purpose flour
1 teaspoon baking powder
3/4 teaspoon salt
1 cup brown sugar
1 cup semi-sweet chocolate chips
1/2 cup chopped walnuts (optional)
1/2 cup raisins (optional)

DIRECTIONS
1. Place butterscotch chips and butter into a glass bowl. Heat in the microwave for about 3 minutes, stirring at 30 second intervals until smooth. Set aside to cool until firm.

2. Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13 inch pan.
In a large bowl, beat the butterscotch chip mixture with eggs and vanilla until well blended. Separately combine the flour, baking powder, and salt; stir into the batter until evenly mixed. Mix in the brown sugar, chocolate chips, walnuts, and raisins (I didn't add walnuts or raisins and they were still great). Spread the batter evenly in the prepared pan.

3. Bake for 25 minutes in the preheated oven, just until the bars begin to pull away from the sides of the pan. Cut into squares while warm.