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–+ servings
A few homemade easy Toffee Bars on a plate.
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Easy Toffee Bars

Layered treats with a dense cake mix layer, a smooth chocolate layer and topped with bits of Heath toffee.
Course Dessert
Cuisine American
Prep Time 10 minutes
Cook Time 16 minutes
Total Time 26 minutes
Servings 35
Calories 209kcal
Author Brandie Skibinski

Ingredients

  • 1 box white cake mix
  • 1 cup all-purpose flour, spooned and leveled (see notes below)
  • ½ cup packed dark brown sugar (can use light brown sugar)
  • ¼ teaspoon salt
  • ¾ cup salted butter, melted and cooled slightly ( 1 ⅓ sticks)
  • 1 large egg
  • 3 cups dark chocolate chips (or semi sweet chocolate chips)
  • ¼ cup Heath toffee bits

Instructions

  • Preheat the oven to 350F degrees. Spray a half sheet (18x13-inch) baking pan with nonstick spray (I like the kind with flour in it) or line with parchment paper.
  • In a large bowl, mix together 1 box white cake mix, 1 cup all-purpose flour, spooned and leveled, ½ cup packed dark brown sugar and ¼ teaspoon salt until combined. This can also be done in a stand mixer or with an electric hand mixer.
    A mixing bowl with white cake mix, flour, dark brown sugar and salt.
  • Add in ¾ cup salted butter, melted and cooled slightly and 1 large egg and mix until a crumbly dough forms.
    A mixing bowl with white cake mix, flour, dark brown sugar, salt, eggs, and butter.
  • Press the mixture into the prepared pan in an even layer. You may find it helpful to use a rolling pin (lightly coated in flour so it doesn’t stick) to help flatten it.
    A cake mix dough rolled out on a sheet pan waiting to be baked.
  • Bake (on the middle rack) for 14-16 minutes or until golden brown.
    A baked cake crust on a sheet pan.
  • Remove from the oven and immediately sprinkle on 3 cups dark chocolate chips in an even layer. You want them to be able to melt from the heat.
    Dark chocolate chips on a cake crust.
  • Allow the chocolate to set for about 4-5 minutes, spread around the chocolate with a butter knife or offset spatula until smooth (this should be easy as the chocolate chips should be soft and melted by this point).
    Chocolate mixture spread over a cake crust.
  • Evenly sprinkle ¼ cup Heath toffee bits on top then allow the bars to cool completely.
    Heath toffee bits on top of a crust and chocolate layer.
  • Cut into squares and enjoy!
    A Toffee Bar with a bite taken out and a few others in a stack.

Notes

  • Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.
  • It is important you do not overmeasure the flour or the base will come out too dry and won't stick together. See my ingredient list in the post above for how to properly measure flour so that doesn't happen. 

Nutrition

Calories: 209kcal | Carbohydrates: 28g | Protein: 2g | Fat: 10g | Sodium: 172mg | Fiber: 1g | Sugar: 16g
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