Description

Chocolate toffee blondies are a decadent twist on classic blondies, combining the nutty richness of brown butter with the caramel crunch of toffee and the melty pockets of semisweet chocolate. These dessert bars come together quickly without a mixer and bake into a dense, chewy texture that’s perfect for slicing and sharing. They’re ideal for bake sales, weeknight treats, or any time you want a comforting, bakery-style bar at home.

How to Make Chocolate Toffee Blondies

Start by browning the butter, which deepens the flavor and adds a toffee-like nuttiness to the batter. After the butter cools slightly, whisk in brown sugar, then the egg, vanilla, and salt. Fold in all-purpose flour, followed by toffee bits and chocolate chips. Press the batter into a parchment-lined 8-inch square pan and bake until golden and set in the center. Finish with flaky salt once the bars are out of the oven and cooling.

Ingredients

• 10 Tbsp (140 g) unsalted butter
• 1 cup (200 g) light brown sugar
• 1 large egg (about 50 g), at room temperature
• 2 tsp (8 g) vanilla extract
• 1/4 tsp salt
• 1 cup plus 2 Tbsp (158 g) all-purpose flour
• 2/3 cup (100 g) toffee bits
• 2/3 cup (113 g) semisweet chocolate chips (or dark chocolate if you prefer)
• Flaky salt, for sprinkling on top

Instructions

1. Preheat your oven to 350°F (175°C). Line an 8-inch square baking pan with parchment paper, leaving an overhang for easy removal.
2. Brown the butter: Melt the butter in a heavy-bottomed saucepan over medium heat. Stir constantly as it foams and the milk solids turn golden brown and fragrant, about 6 minutes. Watch carefully to prevent burning. Pour the browned butter into a medium bowl and let it cool for about 5 minutes.
3. Combine sugars and wet ingredients: Add the brown sugar to the cooled browned butter and whisk until fully combined. Whisk in the egg, vanilla extract, and the 1/4 teaspoon of salt until smooth.
4. Add the dry ingredients: Gently fold the all-purpose flour into the wet mixture with a rubber spatula, stirring just until no streaks of flour remain. Avoid overmixing so the bars stay tender.
5. Fold in mix-ins: Fold in the toffee bits and semisweet chocolate chips until evenly distributed through the batter.
6. Bake: Scrape the batter into the prepared pan and use a piece of parchment or an offset spatula coated with a bit of nonstick spray to press it evenly. Tap the pan once or twice to release any trapped air. Bake for about 25 minutes, until the top is golden and the center is set — a toothpick inserted into the middle should come out clean or with a few moist crumbs attached.
7. Finish and cool: Remove the pan from the oven and immediately sprinkle the top with flaky salt to taste. Cool the blondies completely in the pan on a wire rack.
8. Slice and store: Use the parchment overhang to lift the cooled slab from the pan and transfer to a cutting board. Slice into 12 to 16 squares with a sharp knife. Store leftover blondies in an airtight container at room temperature for 2–3 days, or freeze for longer storage.

Equipment

• Heavy-bottomed saucepan for browning butter
• Medium mixing bowls
• Rubber spatula or wooden spoon
• 8-inch square baking pan lined with parchment
• Wire cooling rack

Notes

Brown butter: Browning butter adds a toasty, caramel-like depth of flavor that complements the toffee. Be attentive while browning — the process happens quickly once the milk solids begin to color.

Chocolate choice: Semisweet chips give a classic balance to the sweet toffee. You can swap in dark chocolate chips for a less sweet, more intense chocolate flavor.

Freezing: To freeze, cool the bars completely, wrap tightly in plastic wrap, and place in an airtight freezer bag. Freeze up to 3 months. Thaw at room temperature while still wrapped to avoid condensation on the bars.

More Blondie Ideas

If you love these chocolate toffee blondies, try other variations such as peanut butter cup blondies or spiced snickerdoodle blondies for different flavors and textures.