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Servings: makes 24-30 bars Time: prep: 15 minutes, bake: 30-40 minutes Difficulty: easy
Prep Time 15 mins
Cook Time 35 mins
Course Dessert, Snack
Cuisine American
Servings 24


  • 1 1/4 cups {2 1/2 sticks} unsalted butter
  • 2 1/4 cups all purpose flour
  • 1 1/2 tsp baking powder
  • 1 1/2 tsp salt
  • 2 cups light brown sugar packed
  • 1/2 cup granulated white sugar
  • 3 large eggs
  • 2 T pure vanilla or butter vanilla extract
  • 8 oz toffee pieces {I used Heath}
  • 1 cup butterscotch baking chips


  • Preheat oven to 350 degrees. Grease or spray a 9″ x 13″ baking dish. Line with parchment and grease or spray the parchment paper.
  • Put butter into a medium saucepan over medium heat, and cook, stirring, until it begins to brown or turn deeper yellow. Cool.
  • Whisk together flour, baking powder and salt. In the bowl of your mixer combine brown butter, brown sugar, and white sugar. Mix, then add eggs using the paddle attachment. Beat on medium speed for 3 minutes, then add vanilla and beat to combine. Add toffee and butterscotch and fold in with a large spoon or spatula. Pour batter into prepared pan.
  • Bake for 25 minutes, then check with a cake tester or toothpick. Continue baking until just done. Remove from oven and cool completely on the counter. When cool, remove from pan by lifting the edges of the parchment paper. Cut into squares. Store in a covered container either at room temperature or refrigerate for longer storage.
  • Makes 24-30 squares, depending on how large you cut them.
Keyword blondie, butterscotch, cookie bar, toffee