Dark Chocolate Yogurt Cake

Name: Dark Chocolate Yogurt Cake
Cook time: 20 min
Total time: 20 min
Ingredients: 3 tablespoons butter; 1/2 cup brown sugar; 1 egg; 1 teaspoon vanilla extract; 1 1/2 cups flour; 1 teaspoon baking powder; 1/4 teaspoons salt; 3 tablespoons dark cocoa powder; 3/4 cup plain Greek yogurt (I used Fage 2%); 1/4 cup milk; 1 cup powdered sugar; 1 tablespoon dark cocoa powder; 1 teaspoon vanilla extract; 1 teaspoon water

This dark chocolate yogurt cake is moist and slightly fudgy, with a deep cocoa flavor from dark cocoa powder and a tender crumb thanks to plain Greek yogurt. The single-layer cake bakes thin and develops a lightly spongey surface that’s perfect with a swipe of whipped cream or a glossy cocoa glaze.

Prep is minimal and the bake is quick: most ovens finish the 8×8 cake in about 18–20 minutes (some need 25–35). Slice into squares or wedges and serve warm or at room temperature for an easy weeknight dessert or a simple after-dinner treat.

Why You’ll Love This Cake

A few things set this cake apart: the yogurt keeps it tender and fudgy without a lot of fuss, dark cocoa gives concentrated chocolate flavor, and the whole recipe comes together fast in a single bowl.

Moist, slightly fudgy crumb from 3/4 cup plain Greek yogurt.
Deep chocolate flavor with 3 tablespoons dark cocoa powder in the batter and 1 tablespoon in the glaze.
Minimal hands-on time—simple creaming and a short bake in an 8×8 pan.
A thin, single-layer cake that slices neatly and dresses up easily with whipped cream or the cocoa glaze.

Pan prep is important for a clean edge—buttering the pan and dusting it with flour or cocoa powder prevents a white flour ring and helps the cake release cleanly.

How to Make the Cake

Preheat the oven to 350 degrees. Butter and flour the bottom and sides of an 8×8 cake pan, or dust the pan with cocoa powder to avoid a white flour ring.
Cream 3 tablespoons butter and 1/2 cup brown sugar together until fluffy. Beat in 1 egg and 1 teaspoon vanilla extract until combined.
Add 3 tablespoons dark cocoa powder, 1 1/2 cups flour, 1 teaspoon baking powder, and 1/4 teaspoons salt; mix until the dry ingredients are incorporated.
Stir in 3/4 cup plain Greek yogurt and mix until the batter is smooth. Add 1/4 cup milk and mix just until the batter comes together. Pour the batter into the prepared 8×8 pan and smooth the top.
Bake for 18-20 minutes, or until the cake is set. The cake is intentionally thin and may appear a bit spongey; check doneness by ensuring the center is set and not jiggly. Note: some ovens require 25-35 minutes—if the center still jiggles, return the cake to the oven and check in 3–5 minute increments.
For the glaze, mix 1 cup powdered sugar, 1 tablespoon dark cocoa powder, 1 teaspoon vanilla extract, and 1 teaspoon water until a smooth glaze forms. If the glaze is too thin, add more powdered sugar a little at a time; if it is too thick, thin with additional water one drop at a time. Drizzle over the cooled (or slightly warm) cake.

Dark Chocolate Yogurt Cake close-up view

Glaze Consistency Tips

The glaze is forgiving and easy to tweak. Aim for a pourable but not runny consistency so it clings to the cake rather than puddling.

Adjust slowly: powdered sugar thickens quickly and water thins a little at a time.

If glaze is too thin: add small amounts of powdered sugar until it thickens.
If glaze is too thick: add 1 drop of water at a time and stir to reach the right flow.
Ideal drizzle: a ribbon that slowly slides off a spoon rather than a fast pour.

Baking Time Troubleshooting

Oven temperatures and bake times vary—this recipe lists 18-20 minutes as the expected window, but some ovens need 25-35 minutes. The cake bakes thin, so it can look done on the surface before the center is set.

If the edges are browning much faster than the center, rotate the pan halfway through baking or tent loosely with foil to prevent overbrowning while the center finishes.

Check the center: it should be set and not jiggle when gently shaken.
If underbaked: return to oven and check every 3–5 minutes.
If overbrowning: tent with foil to slow surface browning while the interior cooks.

Best Yogurt Choice

This cake uses plain Greek yogurt (I used Fage 2%) for structure and moisture. Greek yogurt’s thickness contributes to the cake’s tender, slightly fudgy crumb.

You can use a different fat level of plain Greek yogurt—full-fat gives a richer crumb, while 0% will be lighter.

Use plain, unflavored Greek yogurt for best flavor and texture.
Avoid flavored or sweetened yogurts—these change sweetness and texture.
If you only have regular yogurt, strain it briefly to thicken before measuring 3/4 cup.

Quick Tips

Pan prep: Butter the pan well and dust with flour or cocoa powder. Cocoa powder is preferable for this cake to avoid a pale flour ring on the edges.

Doneness check: Because the cake is thin, the center should be set and not jiggle. A toothpick may come out with a few moist crumbs but not wet batter.

Glaze adjustments: To thicken the glaze add more powdered sugar; to thin it add water one drop at a time until you reach the desired drizzle consistency.

Serving: Slice into small squares or wedges. Serve with fresh whipped cream or a spoonful of cocoa syrup while the cake is slightly warm for the best texture contrast.

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Dark Chocolate Yogurt Cake Pinterest pin

Frequently asked questions

Yes—regular yogurt can work but is thinner. To mimic Greek yogurt’s texture, strain regular yogurt through a fine-mesh sieve or cheesecloth for a short time, then measure 3/4 cup. If you don’t strain, reduce the milk slightly to avoid a too-thin batter.

This recipe produces an intentionally thin, tender cake that may look spongey on the surface. That appearance is normal—check that the center is set and not jiggly to confirm doneness.

Yes. Store cooled cake in an airtight container at room temperature for up to 2 days or in the refrigerator for up to 4 days. For longer storage, wrap tightly and freeze for up to 1 month; thaw in the refrigerator before glazing or serving.

Final notes

This dark chocolate yogurt cake is an easy, dependable option when you want a quick chocolate dessert with a tender, slightly fudgy texture—no special equipment required.

Adjust the glaze to your preferred thickness, keep an eye on bake time, and enjoy slices topped with whipped cream or a simple drizzle of the cocoa glaze.

Equipment

8×8 cake pan

Ingredients

3 tablespoons butter
1/2 cup brown sugar
1 egg
1 teaspoon vanilla extract
1 1/2 cups flour
1 teaspoon baking powder
1/4 teaspoons salt
3 tablespoons dark cocoa powder
3/4 cup plain Greek yogurt I used Fage 2%
1/4 cup milk
1 cup powdered sugar
1 tablespoon dark cocoa powder
1 teaspoon vanilla extract
1 teaspoon water

Instructions

Preheat oven to 350 degrees. Butter and flour the bottom and sides of an 8×8 cake pan, or dust the pan with cocoa powder.
Cream butter and brown sugar together until fluffy, then beat in the egg and 1 teaspoon vanilla extract.
Add 3 tablespoons dark cocoa powder, 1 1/2 cups flour, 1 teaspoon baking powder, and 1/4 teaspoons alt; mix until combined.
Stir in 3/4 cup plain Greek yogurt and mix until the batter is smooth, then add 1/4 cup milk and mix until the batter comes together. Pour the batter into the prepared pan.
Bake for 18-20 minutes, or until the cake is set; the cake will be thin and may appear a bit spongey. Some ovens may require 25-35 minutes, so keep an eye on it. Serve with fresh whipped cream and cocoa syrup if desired.
For the glaze, mix 1 cup powdered sugar, 1 tablespoon dark cocoa powder, 1 teaspoon vanilla extract, and 1 teaspoon water until a smooth glaze forms. If the mixture is too thin, add more powdered sugar; if it is too thick, add water one drop at a time.

Notes

The cake is intentionally thin and may look spongey when done; test for doneness by checking that the center is set. Dusting the pan with cocoa powder prevents a white flour ring. Use Fage 2% or a similar plain Greek yogurt for best texture, and adjust the glaze consistency with extra powdered sugar or water as needed.