Triple Chocolate Skillet Brownie

This triple chocolate skillet brownie is fudgy but balanced, baked right in a cast iron skillet, with an easy gluten-free option. One pan, a handful of steps, and a warm dessert you can carry straight to the table with a stack of spoons.

My husband is something of a brownie snob. He might say “connoisseur” if he’s feeling fancy, but really, he just loves a good brownie. I happen to love skillet cookies. So I set out to build the perfect cross between the two: sweet and rich but balanced, fudgy but not so dense you can only manage two bites. And because he believes everything tastes better in cast iron, into the skillet it went. He was right.

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Why You’ll Love This Skillet Brownie

• One pan, start to finish. Mix, pour, bake, serve. No pan to grease and unmold.
• Fudgy but balanced. Rich enough to satisfy, not so heavy you tap out after a corner.
• Crisp cast iron edges. The skillet gives you that chewy edge against a soft center.
• Gluten-free option built in. A simple one-to-one flour swap, tested and approved.
• Easy enough for a tween to run. Most of this recipe can be handed off with you nearby.

What Makes It Triple Chocolate

Three hits of chocolate: semisweet chips melted into the batter, more semisweet chips folded through, and milk chocolate chips on top. The melted chocolate gives it depth, the chips give it pockets of melt. If you want a fourth dimension, a handful of white or dark chips in the mix is fair game.

Ingredient Notes

• Chocolate chips. You’ll use semisweet two ways (melted and folded in) plus milk chocolate on top. Good chips matter here since chocolate is the whole point.
• Butter. Sweet cream, softened. The amount sets the texture: more butter, fudgier; a little less, cakier (see Tips).
• Gluten-free flour. A one-to-one all-purpose blend works straight across. I tested it with Bob’s Red Mill 1:1 Baking Flour and loved the results.
• Eggs, sugar, vanilla. The base. Beat the sugar and eggs until pale and light; that’s where the structure starts.

How to Make a Triple Chocolate Skillet Brownie

Full measurements and steps are in the recipe card below. The short version: melt the butter and semisweet chips together (a double boiler keeps it smooth), beat your sugar, eggs, and vanilla until pale, blend the cooled chocolate in, then the flour, then fold in the chips. Pour into a buttered cast iron skillet, top with the reserved chips, and bake until the top is just set. Let it rest before cutting so it holds together.

Tips and Variations

• Fudgy vs. cakey. For a cakier brownie, drop the butter to 1/2 cup (1 stick).
• Smooth melt. A double boiler (a heatproof bowl over a small pan of simmering water) melts the chocolate and butter without clumping. The microwave works too, in short bursts with frequent stirring.
• Mix it up. Cinnamon, butterscotch, or white chocolate chips all play well, and small bits of caramel are never a bad idea.
• No cast iron? Use an 8×8 pan or a cake pan. You lose a little of the crisp-edge magic, but it still bakes up beautifully.

How to Store and Make Ahead

Cover the cooled skillet tightly or move squares to an airtight container and keep at room temperature for up to 3 days, or refrigerate for up to a week. Warm individual pieces in the microwave for a few seconds to bring back the gooey center. You can also freeze cooled brownies, wrapped well, for up to 2 months; thaw at room temperature and warm before serving.

Frequently Asked Questions

Can I make this brownie gluten-free? Yes. Swap the all-purpose flour one-to-one for a gluten-free baking blend. Bob’s Red Mill 1:1 is what I tested and recommend, but King Arthur Measure for Measure Gluten Free Flour is also a great choice..

Do I need a cast iron skillet? No. The cast iron gives you crisp edges and a little extra character, but an 8×8 baking pan or a cake pan works fine.

What size skillet should I use? A 10 to 10.25-inch cast iron skillet is the sweet spot for this batch.

How do I store leftovers? Room temperature for up to 3 days in an airtight container, or refrigerated up to a week. Warm briefly before serving.

Can I freeze it? Yes. Wrap cooled brownies well and freeze up to 2 months. Thaw at room temperature and warm before serving.

Can a kid make these? This is a good one to hand off. With an adult on oven duty, a tween can handle most of the mixing and assembly start to finish.