These cookies are the kind I bake when I want something that feels decadent but still comes together with straightforward steps. They pair a tender, cakey-chewy crumb with big chunks of semi-sweet chocolate and crunchy, buttery toffee. A final pinch of flaked sea salt pulls the flavors into sharp focus.

I like keeping the process honest: cream the butter and sugars until smooth, fold in big ingredients by hand, and don’t skip the chill. Chilling firms the dough, concentrates the flavors, and controls spread so the cookies bake up with thick centers and golden edges.

Below you’ll find the exact ingredient list and the step-by-step method I use every time. I’ll also cover swaps, troubleshooting, and storage so you can bake a confident batch whether you’re doing a quick afternoon bake or making trays for a holiday box.

What You’ll Gather

2 ½ sticks (1 1/4 cups) butter, at room temperature — Provides richness and structure; room temperature helps it cream smoothly.
1 ½ cups dark brown sugar (or use light brown sugar and add 1 1/2 tablespoons mild molasses) — Adds moisture, chew, and caramel notes; darker sugar deepens the flavor.
½ cup sugar — Balances sweetness and helps with spread and texture.
2 eggs — Bind the dough and add lift; room-temperature eggs incorporate more evenly.
1 tablespoon vanilla — Essential flavor booster; use pure vanilla if you have it.
1 teaspoon salt — Balances sweetness; do not skip.
1 teaspoon baking soda — Gives lift and helps with browning.
1 ½ teaspoon baking powder — Contributes a tender rise and cakey crumb.
2 cups cake flour — Keeps the cookie tender; cake flour lowers protein for a softer bite.
1 ½ cups bread flour — Adds chew and structure; the mix of flours gives the best texture balance.
2 cups semi-sweet chocolate chunks (I used Ghirardelli bars and chopped them) — Large chunks create pockets of melty chocolate and texture contrast.
1 ½ cups chopped Heath bars (or caramel bits if you can find them) — Crunchy, buttery toffee pieces that deliver the toffee element.
Flaked sea salt — A finishing touch that heightens sweetness and adds crunch.

Method: Salted Toffee Chocolate Chunk Cookies

In a medium bowl whisk together the dry ingredients: 2 cups cake flour, 1 1/2 cups bread flour, 1 teaspoon salt, 1 teaspoon baking soda, and 1 1/2 teaspoon baking powder; set aside.
In the bowl of a stand mixer fitted with the paddle attachment, cream 2 1/2 sticks (1 1/4 cups) butter, 1 1/2 cups dark brown sugar, and 1/2 cup sugar until smooth and combined.
Add 2 eggs and 1 tablespoon vanilla to the creamed butter and sugars and beat until incorporated.
With the mixer on low speed, add the flour mixture to the wet ingredients and mix just until the dough is blended; do not overmix.
Fold in 2 cups semi-sweet chocolate chunks and 1 1/2 cups chopped Heath bars (or caramel bits) with a spatula until evenly distributed.
Cover the dough and chill in the refrigerator for 2–3 hours or overnight, until firm.
When ready to bake, preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
Using a medium cookie scoop (about 2 tablespoons), place mounds of chilled dough on the prepared baking sheet about 2 inches apart.
Top each dough mound with a pinch of flaked sea salt.
Bake for 12–14 minutes, or until the cookies are golden brown around the edges.
Let the cookies cool on the baking sheet for a couple of minutes, then transfer them to a wire rack to finish cooling.
Once cool, store the cookies in a covered, airtight container.

Why You’ll Love This Recipe

These cookies hit a sweet spot between bakery-style and homey. The combination of cake and bread flours gives a soft interior with a chewy edge. That texture alone is worth the slight complexity of using two flours.

Large chocolate chunks and coarsely chopped Heath bars create contrast: molten chocolate, crunchy toffee, and a flaky salt finish. The finished cookie isn’t aggressively sweet; the toffee contributes buttery caramel notes that keep the flavor layered and interesting.

Finally, the dough benefits from chilling. The pause lets you plan ahead and prevents overbaked, flat cookies. If you value texture as much as flavor, this recipe delivers both.

Smart Substitutions

Chocolate chunks — Use chopped chocolate bars instead of pre-made chunks; choose 60–70% cacao for balanced sweetness.
Heath bars (toffee) — If you can’t find Heath, chopped toffee bits or coarsely chopped chocolate-covered toffee work; for a softer chew, use caramel bits cautiously as they can melt more.
Cake + bread flours — If you only have all-purpose flour, use it, but expect slightly different texture: still excellent, just a bit less tender/chewy contrast.
Dark brown sugar — Light brown sugar plus 1 1/2 tablespoons molasses matches the flavor if you’re short on dark brown.

Tools & Equipment Needed

Stand mixer with paddle attachment (or a hand mixer) — For creaming butter and sugar efficiently.
Mixing bowls — One medium for dry ingredients and one for wet.
Measuring cups and spoons — Accurate measuring matters here, especially for dry leaveners.
Kitchen scale (optional) — For the most consistent results, especially with flour.
Medium cookie scoop (about 2 tablespoons) — Keeps the cookies uniform in size for even baking.
Baking sheets and parchment paper — Prevents sticking and supports even browning.
Wire rack — Allows cookies to cool evenly without becoming soggy.

Problems & Prevention

Flat cookies: Usually caused by over-soft butter, overmixing, or too-warm dough. Prevent this by using room-temperature (not warm) butter, mixing only until combined when you add flour, and chilling the dough for at least 2 hours.

Dry, crumbly cookies: Most often from too much flour or overbaking. Measure flour properly (fluff, spoon, level) or weigh it. Remove cookies from the oven when the edges are golden and centers still look slightly soft; they’ll finish firming on the sheet.

Greasy spread: If cookies spread excessively, reduce oven temperature slightly or chill dough longer. Also check that baking soda/powder are fresh; expired leaveners can cause odd spread and texture.

Toffee bleeding or becoming sticky: Coarse chopped Heath bars generally hold up, but heat can soften them. If your toffee bits are very small or covered in chocolate, bake tests first and consider reducing bake time by a minute or two.

Substitutions by Diet

Gluten-free: Use a 1:1 gluten-free baking flour blend that includes xanthan gum. Texture will differ slightly; cookies may spread more, so chilling is extra-important.

Dairy-free/vegan: Replace butter with a solid vegan baking stick or a firm plant-based butter substitute that performs like butter when creamed. Replace eggs with a commercial egg replacer or a combination of flax egg (1 tbsp ground flax + 3 tbsp water per egg, chilled) and a little extra leavening if needed. Note: these swaps will change texture and flavor, so test a small batch first.

Lower sugar: You can reduce granulated sugar slightly, but be cautious—sugars contribute to structure, browning, and texture. Using sugar alternatives requires recipe-specific testing.

Method to the Madness

Why two flours? Cake flour lowers protein for tenderness; bread flour raises it for chew. Together they give the cookie that soft-but-chewy contrast that feels like a bakery cookie made at home.

Creaming the butter and sugars incorporates air and creates structure. Beat until smooth, not fluffy; you want even sugar distribution. When you add eggs and vanilla, mix until just combined.

Keep the mixer low once you add the flour. Overmixing develops gluten and makes cookies tough. Fold in the chunks and toffee with a spatula to preserve those big inclusions and keep the dough from overworking.

Chilling is not optional for this dough if you want tall, chewy cookies. It firms the butter, hydrates the flours, and lets flavors meld. If you’re short on time, 2 hours is the minimum; overnight is convenient and often tastier.

Bake until edges are golden. Centers will look soft but finish setting as they cool on the sheet. Resist the urge to leave them in until fully firm—that’s how you lose tenderness.

Make-Ahead & Storage

Dough: Chill the dough for 2–3 hours or overnight. For longer storage, portion the scooped dough onto a tray, freeze until solid, then transfer to a freezer bag. Bake frozen dough adding 1–2 minutes to the bake time.

Baked cookies: Store at room temperature in an airtight container up to 4–5 days. Place a slice of bread or a folded paper towel in the container to help retain softness for the first couple of days.

Freezing baked cookies: Cool completely, then freeze in a single layer on a tray. Once frozen, transfer to a freezer bag. Thaw at room temperature; you can warm them briefly in a low oven to revive the texture.

FAQ

Can I use all-purpose flour instead of cake and bread flour?
Yes. Use all-purpose for convenience. Texture will be slightly different—still delicious—but you’ll lose that distinct tender-and-chewy contrast.

How long can I chill the dough?
Chill 2–3 hours or overnight. You can also chill for up to 48 hours; beyond that, dough may dry slightly—seal it well.

Why do my cookies spread too much?
Butter too soft, dough not chilled, or too little flour are common causes. Check oven temperature and fresh leaveners as well.

Can I use smaller chocolate chips?
You can, but the recipe is built for large chunks. Smaller chips distribute differently and change the melty pockets and texture balance.

What if I don’t have Heath bars?
Substitute with any toffee bits or chopped hard-caramel candy. Watch bake behavior: some caramel bits melt more and alter texture.

Save & Share

If these cookies earned a spot in your rotation, save the recipe and share a photo with a quick note about the chill time you used. I love seeing how folks adapt the chunks and toffee. Tag a friend who needs a cookie pick-me-up—or bake a tray for someone who does. They travel well and make a thoughtful, homemade gift.

Happy baking. Keep the salt handy—you’ll know when to pinch it on top, and that little burst of salt makes all the difference.

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Salted Toffee Chocolate Chunk Cookies

Chewy chocolate chunk cookies studded with chopped Heath toffee and finished with flaked sea salt.

Prep Time28

Cook Time44

Total Time9 42

Course: Dessert

Servings: 4 servings

Ingredients

2 1/2 sticks 1 1/4 cups butter, at room temperature
1 1/2 cups dark brown sugar or use light brown sugar and add 1 1/2 tablespoons mild molasses
1/2 cup sugar
2 eggs
1 tablespoon vanilla
1 teaspoon salt
1 teaspoon baking soda
1 1/2 teaspoon baking powder
2 cups cake flour
1 1/2 cups bread flour
2 cups semi-sweet chocolate chunks I used Ghirardelli bars and chopped them
1 1/2 cups chopped Heath bars or caramel bits if you can find them
Flaked sea salt

Instructions

In a medium bowl whisk together the dry ingredients: 2 cups cake flour, 1 1/2 cups bread flour, 1 teaspoon salt, 1 teaspoon baking soda, and 1 1/2 teaspoon baking powder; set aside.
In the bowl of a stand mixer fitted with the paddle attachment, cream 2 1/2 sticks (1 1/4 cups) butter, 1 1/2 cups dark brown sugar, and 1/2 cup sugar until smooth and combined.
Add 2 eggs and 1 tablespoon vanilla to the creamed butter and sugars and beat until incorporated.
With the mixer on low speed, add the flour mixture to the wet ingredients and mix just until the dough is blended; do not overmix.
Fold in 2 cups semi-sweet chocolate chunks and 1 1/2 cups chopped Heath bars (or caramel bits) with a spatula until evenly distributed.
Cover the dough and chill in the refrigerator for 2–3 hours or overnight, until firm.
When ready to bake, preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
Using a medium cookie scoop (about 2 tablespoons), place mounds of chilled dough on the prepared baking sheet about 2 inches apart.
Top each dough mound with a pinch of flaked sea salt.
Bake for 12–14 minutes, or until the cookies are golden brown around the edges.
Let the cookies cool on the baking sheet for a couple of minutes, then transfer them to a wire rack to finish cooling.
Once cool, store the cookies in a covered, airtight container.