Fudgy Zucchini Brownies with Salted Caramel Swirl

Adding zucchini to brownies sounds like a sneaky way to slip a vegetable into dessert, and honestly, it partly is. The better reason is what it does to the texture.

As the brownies bake, the grated zucchini melts into the batter and leaves behind moisture instead of any actual vegetable flavor. What you get is a dense, fudgy center that stays soft for days.

Then there’s the salted caramel swirled across the top. The salt cuts the sweetness just enough, so each bite lands somewhere between rich chocolate and buttery caramel without tipping into cloying.

These come together in one bowl for the batter, and the caramel takes just a few minutes on the stove. If you’d rather skip that step, a good jarred caramel works too.

Why You’ll Love This Recipe

They’re genuinely fudgy, not cakey. The zucchini keeps the crumb tight and moist, which is exactly what you want in a brownie.

The salted caramel does a lot of heavy lifting. That hit of salt keeps things balanced and makes them taste more involved than the effort suggests.

It’s a smart way to use up a summer zucchini glut. No one will guess there’s a vegetable hiding in there.

Cleanup is easy since the batter mixes in a single bowl. And they keep well, staying soft on the counter for several days.

Ingredients

For the brownies

• 1 cup grated zucchini (about 1 medium), not squeezed dry
• 1/2 cup unsalted butter, melted
• 1 cup granulated sugar
• 1/3 cup packed brown sugar
• 2 large eggs
• 2 teaspoons vanilla extract
• 3/4 cup all-purpose flour
• 1/2 cup unsweetened cocoa powder
• 1/4 teaspoon salt
• 1 cup semisweet chocolate chips

For the salted caramel swirl

• 1 cup granulated sugar
• 6 tablespoons unsalted butter, cubed
• 1/2 cup heavy cream, at room temperature
• 1 teaspoon flaky sea salt (or 1/2 teaspoon fine salt)

Instructions

1. Heat your oven to 350°F (175°C). Line an 8×8-inch pan with parchment, leaving some overhang on the sides so you can lift the brownies out later.
2. Grate the zucchini and set it aside. Don’t wring out the moisture, since that’s what keeps these fudgy.
3. In a large bowl, whisk the melted butter with both sugars until smooth. Add the eggs and vanilla and whisk again until glossy.
4. Add the flour, cocoa powder, and salt to the bowl. Stir just until no dry streaks remain, then fold in the zucchini and chocolate chips.
5. Spread the batter into the prepared pan and smooth the top. It will be thick, so use the back of a spoon or spatula to push it into the corners.
6. Now start the caramel. Add the sugar to a medium saucepan over medium heat and let it melt, stirring occasionally, until it turns a deep amber, about 6 to 8 minutes.
7. Drop in the butter and stir until it melts fully. The caramel will bubble up, so keep stirring.
8. Slowly pour in the heavy cream while stirring, then let it boil for one minute. Take it off the heat and stir in the sea salt.
9. Spoon dollops of the warm caramel over the brownie batter. Drag a knife or skewer through the dollops to swirl them across the surface.
10. Bake for 30 to 35 minutes, until the edges are set but the center still looks slightly soft. A toothpick should come out with a few moist crumbs, not wet batter.
11. Let the brownies cool completely in the pan. This is the hard part, but cutting them warm makes them fall apart.
12. Lift them out using the parchment overhang, slice into 16 squares, and finish with an extra pinch of flaky salt if you like.

Tips and Storage

You’ll have more caramel than you need for the swirl. Save the extra in a jar for drizzling over ice cream or spooning onto the brownies as you serve them.

Store the brownies in an airtight container at room temperature for up to 4 days. They also freeze well for up to 3 months, so wrap them individually if you want a stash.

For clean slices, run your knife under hot water and wipe it dry between cuts.

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