Grandma makes delicious Butterscotch Blondies. Watch video. Print recipe. Grandma's Butterscotch Blondies Ingredients ½ Cup butter, softened ½ Cup sugar ½ Cup brown sugar 1 egg 1 teaspoon vanilla ½ teaspoon baking powder 1 Cup flour 1 Cup butterscotch chips Instructions Preheat oven to 350F Combine butter with sugars. Add eggs and vanilla and