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Cake Mix Toffee Bars

Published: Dec 31, 2025 by Patricia Collins

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There's something magical about the aroma of freshly baked treats wafting through the house, and for me, nothing brings back those cherished memories quite like my Cake Mix Toffee Bars. I remember my mom whipping up a batch of these sweet delights for our family gatherings, and I'd always sneak into the kitchen to grab a warm piece before they even made it to the dessert table. The combination of gooey toffee and rich chocolate chips was irresistible, and even now, every bite transports me back to those sunny afternoons spent with loved ones.

Cake Mix Toffee Bars - detail 1 this …

These Cake Mix Toffee Bars are perfect for any occasion, whether you're celebrating a birthday, hosting a casual get-together, or just need a quick pick-me-up after a long day. They're easy to throw together and always a hit with the family. Plus, who doesn't love a dessert that requires minimal effort but delivers maximum flavor? Trust me, once you've tasted these bars, they'll become a favorite in your household too!

Why You'll Love "Cake Mix Toffee Bars"

  • Quick prep time of just 10 minutes, making them a perfect last-minute dessert.
  • Only a handful of ingredients, so you can whip them up with items already in your pantry.
  • Family-friendly treat that's sure to please both kids and adults alike.
  • Freezer-friendly! You can make a double batch and store some for later.
  • Rich, indulgent flavors of toffee and chocolate in every bite.
  • Easy to customize with your favorite mix-ins or toppings for a personal touch.

Ingredients You'll Need

  • 1 box yellow cake mix (15.25 oz) - Make sure to use a good quality brand for the best flavor.
  • ½ cup unsalted butter, melted - This adds richness; feel free to use salted butter if that's what you have.
  • 1 large egg - Room temperature eggs mix better, so let it sit out for a bit if it's cold.
  • 1 cup sweetened condensed milk - This gives the bars that creamy texture; don't substitute with evaporated milk!
  • 1 cup semi-sweet chocolate chips - I personally love Ghirardelli or Nestlé; they melt beautifully.
  • 1 cup toffee bits (such as Heath Bits) - These add that delightful crunch; you can also chop up toffee bars if you can't find bits.

Step-by-Step Instructions

Preheat the Oven

  1. First things first, preheat your oven to 350°F (175°C). This is crucial for getting those bars baked to perfection.
  2. While the oven is heating up, grab your baking pan (a 9x13 inch pan works great) and lightly grease it with butter or cooking spray to prevent sticking.

Make the Base

  1. In a mixing bowl, combine the yellow cake mix, melted butter, and large egg. I like to use a spatula or wooden spoon to mix it all together.
  2. Mix until everything is well combined and you don't see any dry cake mix. It should be a thick batter, and don't worry if it looks a little different than other cake batters; that's totally normal!

Press the Mixture

  1. Now, take that delicious mixture and press it evenly into the bottom of the prepared baking pan. It might feel a bit sticky, but just use your fingers or the back of a measuring cup to flatten it out.
  2. Make sure it's evenly spread, as this will be the base for your toffee bars.

Add the Toppings

  1. Once your base is ready, pour the sweetened condensed milk evenly over the top. This is where the magic happens!
  2. Next, sprinkle the semi-sweet chocolate chips and toffee bits generously over the condensed milk. Don't be shy; make sure they cover the entire surface for those luscious bites of flavor.

Bake the Bars

  1. Pop the baking pan into the preheated oven and bake for about 25 minutes. You'll know they're done when the top is golden brown and the edges look slightly crispy.
  2. Keep an eye on them towards the end of the baking time - ovens can vary, and you don't want them to overbake!

Cool and Cut

  1. Once baked, remove the pan from the oven and let the bars cool in the pan for at least 10-15 minutes. This helps them set up a bit more.
  2. After they've cooled, run a knife around the edges to loosen them, then cut into squares or bars as you prefer. They're perfect for sharing (or not!).

Variations

  • For a fun twist, try adding a teaspoon of cinnamon for a warm, spiced flavor.
  • Substitute the yellow cake mix with chocolate or spice cake mix for a different base.
  • Make them gluten-free by using a gluten-free cake mix.
  • Add chopped nuts, like pecans or walnuts, for extra crunch.
  • For a seasonal touch, incorporate pumpkin puree and spices in the base during fall.

Serving and Storage Tips

Serving

These Cake Mix Toffee Bars are best served warm, perhaps with a scoop of vanilla ice cream on the side for a decadent treat. You can also drizzle some chocolate sauce on top or sprinkle a pinch of sea salt for added flavor. They make a delightful dessert for gatherings or just a cozy night in!

Storage

To keep your bars fresh, store them in an airtight container at room temperature for up to five days. If you want to keep them longer, you can freeze them for up to three months. Just make sure to wrap them tightly in plastic wrap before placing them in a freezer bag!

Helpful Notes

  • If you want a richer flavor, try using browned butter instead of regular melted butter.
  • Feel free to substitute the semi-sweet chocolate chips with dark chocolate or milk chocolate for a different taste experience.
  • For those with nut allergies, just skip the nuts; these bars are still delicious without them!
  • Consider adding a splash of vanilla extract to the base for an extra layer of flavor.
  • These bars can be made dairy-free by using dairy-free chocolate chips and a dairy-free cake mix.

Frequently Asked Questions

Can I freeze Cake Mix Toffee Bars?

Yes, you can absolutely freeze these delicious bars! Once they're completely cooled, wrap them tightly in plastic wrap and then place them in a freezer bag. They'll keep well in the freezer for up to three months. When you're ready to enjoy them, just let them thaw at room temperature for a bit or pop them in the microwave for a quick warm-up.

What can I substitute for the butter?

If you need to substitute the butter, you can use coconut oil or vegetable oil in the same amount. For a dairy-free option, use a vegan butter substitute, which works beautifully in this recipe too!

Can I add nuts to the recipe?

Absolutely! Adding nuts like chopped pecans or walnuts can give your Cake Mix Toffee Bars a lovely crunch. Just sprinkle them on top along with the chocolate chips and toffee bits for a delightful texture contrast.

Final Thoughts

So there you have it - a simple yet scrumptious recipe for Cake Mix Toffee Bars that's sure to become a beloved family favorite! I can't wait for you to whip these up in your own kitchen and enjoy the wonderful flavors that come together so effortlessly. Remember, cooking is all about having fun and making memories, so don't stress about perfection. Just gather your ingredients, follow along, and let the sweet aroma fill your home. I promise you, each bite will bring a smile to your face. Happy baking!

Cake Mix Toffee Bars

Cake Mix Toffee Bars

These Cake Mix Toffee Bars are quick and easy to make, combining the richness of toffee and chocolate in a delicious treat.
Print Recipe Pin Recipe
Prep Time 10 minutes mins
Cook Time 25 minutes mins
Total Time 35 minutes mins
Course Dessert
Cuisine American
Servings 12 bars
Calories 250 kcal

Equipment

  • Mixing bowl
  • baking pan

Ingredients
  

For the Base

  • 1 box yellow cake mix (15.25 oz)
  • ½ cup unsalted butter melted
  • 1 large egg

For the Topping

  • 1 cup sweetened condensed milk
  • 1 cup semi-sweet chocolate chips
  • 1 cup toffee bits (such as Heath Bits)

Instructions
 

  • Preheat your oven to 350°F (175°C) and grease a baking pan.
  • In a mixing bowl, combine the yellow cake mix, melted butter, and egg. Mix until well combined.
  • Press the mixture into the bottom of the prepared baking pan.
  • Pour the sweetened condensed milk evenly over the base.
  • Sprinkle the chocolate chips and toffee bits over the top.
  • Bake in the preheated oven for 25 minutes or until golden brown.
  • Let them cool before cutting into bars.

Notes

These bars can be stored in an airtight container for several days. You can also add nuts for extra crunch.
Keyword Cake Mix Toffee Bars, dessert bars, toffee bars

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Hi, I’m Patricia—a home cook sharing simple, comforting recipes to bring people together and make everyday meals memorable.

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