If you’re looking for an easy yet indulgent treat, these Cake Mix Toffee Bars are the perfect solution. With minimal ingredients and a simple baking process, they deliver a rich, buttery flavor with gooey chocolate and crunchy toffee bits in every bite. Whether you’re making them for a party, a bake sale, or just a cozy night in, these bars are guaranteed to satisfy your sweet tooth.

Decadent and Easy Cake Mix Toffee Bars
Cake mix is a secret weapon in the kitchen, making dessert preparation quick and effortless. This recipe transforms a simple cake mix into chewy, chocolatey toffee bars with a buttery base. The combination of chocolate chips and toffee bits creates a delightful contrast between the soft, chewy center and the crisp, caramelized topping.
Ingredients for Cake Mix Toffee Bars
To create these irresistibly chewy and gooey Cake Mix Toffee Bars, you’ll need just a few simple ingredients. Each one plays a key role in bringing together the perfect combination of flavors and textures.
- Yellow Cake Mix – Acts as the base for these bars, providing a soft and buttery foundation with a hint of vanilla.
- Butter – Melted butter enhances the richness of the bars and helps bind the ingredients together.
- Eggs – Adds structure and moisture, keeping the bars soft and chewy.
- Chocolate Chips – Melts into the bars, creating delicious pockets of gooey chocolate throughout. You can use semi-sweet, dark, or milk chocolate chips.
- Toffee Bits – Brings a delightful crunch and caramelized flavor, perfectly complementing the soft texture of the bars.
- Sweetened Condensed Milk – Adds an extra layer of sweetness and moisture, creating a luscious and slightly sticky texture.

How to Make Cake Mix Toffee Bars
This recipe comes together quickly with just a few easy steps. Follow along to make these rich, buttery treats.
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish or line it with parchment paper for easy removal.
Step 2: Prepare the Base
In a large mixing bowl, combine the yellow cake mix, melted butter, and eggs. Stir until a thick dough forms. Press two-thirds of the dough evenly into the bottom of the prepared baking dish to form the base layer.
Step 3: Add the Chocolate and Toffee
Sprinkle the chocolate chips and toffee bits evenly over the base layer. These will melt and blend beautifully, creating a rich, caramel-like filling.
Step 4: Drizzle with Sweetened Condensed Milk
Pour the sweetened condensed milk evenly over the chocolate and toffee layer. This will add extra moisture and help bind everything together while baking.
Step 5: Top with Remaining Dough
Take the remaining one-third of the dough and crumble it over the top of the bars. Don’t worry about covering everything completely—leaving some gaps allows the gooey filling to peek through after baking.
Step 6: Bake to Perfection
Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the edges are golden brown and the center is set. The bars may look slightly gooey when you take them out, but they will firm up as they cool.
Step 7: Cool and Serve
Allow the bars to cool completely before slicing into squares. This helps them set properly, making them easier to cut. Enjoy them as they are, or serve with a scoop of vanilla ice cream for an extra decadent treat!
How Long to Bake Cake Mix Toffee Bars
The baking time for these bars depends on your oven and how gooey you want them to be. Here’s a general guide to ensure the perfect texture:
- Soft and Gooey – Bake for 25 minutes if you prefer a softer, slightly underbaked center.
- Chewy and Firm – Bake for 30 minutes for a firmer texture while still maintaining a slight chewiness.
- Golden and Crisp – If you like your bars a bit crispier on the edges, bake for 35 minutes, but keep an eye on them to avoid overbaking.
You’ll know the bars are done when the edges turn golden brown and the center looks set but still slightly soft. Keep in mind they will continue to firm up as they cool.
How to Store Leftovers
If you have any leftovers (which isn’t always the case because these bars disappear fast!), here’s how to keep them fresh:
- Room Temperature – Store the bars in an airtight container for up to 4 days. They’ll stay soft and chewy.
- Refrigerator – If you want them to last longer, store them in an airtight container in the fridge for up to 1 week. This will firm them up slightly, but they will still taste delicious.
- Freezer – These bars freeze beautifully! Wrap individual bars in plastic wrap, then place them in an airtight container or zip-top bag. They can be stored in the freezer for up to 3 months. To enjoy, let them thaw at room temperature or microwave for a few seconds to soften.
Tips for Perfect Cake Mix Toffee Bars
Want to make sure your bars turn out amazing every time? Keep these tips in mind:
- Use Parchment Paper – Lining your baking dish with parchment paper makes it easy to lift the bars out and cut them cleanly.
- Let Them Cool Completely – These bars are gooey right out of the oven but will set as they cool, making them easier to slice.
- Try Different Chocolate Chips – Use dark chocolate, milk chocolate, or even white chocolate chips for a unique twist.
- Add Nuts for Extra Crunch – Chopped pecans, walnuts, or almonds add a delightful crunch and complement the toffee flavor.
- Drizzle with Caramel or Chocolate – For an extra indulgent touch, drizzle melted caramel or chocolate over the top before serving.
These Cake Mix Toffee Bars are rich, buttery, and incredibly easy to make. Whether you’re making them for a party or a simple dessert at home, they’re guaranteed to be a hit!


Cake Mix Toffee Bars
- Total Time: 35 minutes
- Yield: 12–16 bars 1x
Description
These Cake Mix Toffee Bars are rich, buttery, and loaded with gooey chocolate and crunchy toffee bits. Made with just a few simple ingredients, they come together effortlessly for a decadent dessert that’s perfect for any occasion. Whether you love soft and chewy bars or a slightly crisp edge, this recipe is sure to become a favorite!
Ingredients
- 1 box yellow cake mix
- ½ cup butter, melted
- 2 eggs
- 1 cup chocolate chips (semi-sweet, milk, or dark)
- ¾ cup toffee bits
- 1 can (14 oz) sweetened condensed milk
Instructions
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish or line it with parchment paper.
- In a large bowl, mix together the cake mix, melted butter, and eggs until a thick dough forms.
- Press two-thirds of the dough evenly into the prepared baking dish to form the base.
- Sprinkle the chocolate chips and toffee bits evenly over the dough layer.
- Drizzle the sweetened condensed milk evenly over the chocolate and toffee layer.
- Crumble the remaining dough over the top, leaving some gaps for the filling to peek through.
- Bake for 25-30 minutes, or until the edges are golden brown and the center looks set.
- Allow the bars to cool completely before slicing into squares. Enjoy!
- Prep Time: 10 minutes
- Cook Time: 25 minutes