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Butterscotch Bars with Chocolate and Disappearing Marshmallows

These Butterscotch Bars are rich and flavorful, with butterscotch and chocolate chips, plus puffy marshmallows that melt into the bars and give the most wonderful texture!

Cook Time
mins
Total Time
25 mins
Servings: 16 bars
Calories: 318 kcal
Course: Baked Goods
Cuisine: American

Ingredients

  • ½ cup unsalted butter
  • 1 cup butterscotch chips
  • 1½ cups all-purpose flour
  • ⅔ cup packed light brown sugar
  • 2 teaspoons baking powder
  • ½ teaspoon Morton kosher salt
  • 1 teaspoon pure vanilla extract
  • 2 large eggs
  • 2½ cups mini marshmallows
  • 2 cups semi-sweet chocolate chips (I use Guittard brand)

Instructions

    Cup of Yum
  1. Preheat oven to 350°F. Lightly spray the bottom and sides of a 9'' x 13'' pan (I like to use a light-colored metal pan) with non-stick spray and set aside.
  2. In a large saucepan over medium-low heat, melt butter and butterscotch chips, stirring constantly. Do not let the mixture darken. Don't worry if it looks grainy or separated; it'll still work! Remove from heat - let cool until mixture is only lukewarm (you'll be adding marshmallows and chocolate chips, and don't want them to start melting before going in the oven).
  3. In a medium bowl, whisk together flour, brown sugar, baking powder, and salt.
  4. Once the butterscotch mixture is the slightest bit warm, add vanilla and eggs, and stir well to combine. Then add the flour mixture and stir to combine.
  5. Quickly and gently fold in marshmallows and chocolate chips, until just combined. Do not over stir.
  6. Spread mixture into prepared pan and bake for about 20 minutes or so, taking care to not over bake. (I think they're best when just slightly under-baked!) The edges should be nicely browned, and the center not quite set. The bars will firm up as they cool.
  7. Let cool COMPLETELY before cutting into individual bars.

Notes

  • from Mom’s recipe box

Nutrition Information

Serving 1 Calories 318kcal (16%) Carbohydrates 44g (15%) Protein 3g (6%) Fat 16g (25%) Saturated Fat 10g (50%) Polyunsaturated Fat 5g Cholesterol 39mg (13%) Sodium 164mg (7%) Fiber 2g (8%) Sugar 31g (62%)

Nutrition Facts

Serving: 16bars

Amount Per Serving

Calories 318

% Daily Value*

Serving 1
Calories 318kcal 16%
Carbohydrates 44g 15%
Protein 3g 6%
Fat 16g 25%
Saturated Fat 10g 50%
Polyunsaturated Fat 5g 29%
Cholesterol 39mg 13%
Sodium 164mg 7%
Fiber 2g 8%
Sugar 31g 62%

* Percent Daily Values are based on a 2,000 calorie diet.