Why it works: Vanilla and chocolate are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. The science ↓
Chocolate Cake Bars
Ingredients
Directions
Prepare the batter
Preheat oven to 350°F.
Coat an 8‑inch square baking pan with cooking spray.
In a medium bowl, whisk together tofu and vinegar.
Whisk in brown sugar, butter, and vanilla until blended.
In a large bowl, mix together flour, cocoa, baking powder, and baking soda.
Whisk in the tofu mixture until just blended.
Spread batter evenly in the prepared pan.
Bake and cool
Bake until the cake pulls away from the sides of the pan and feels almost firm in the center, about 25 minutes.
Transfer to a wire rack to cool until the cake is firm enough to cut, about 30 minutes.
While the cake is still in the pan, cut into bars and serve.
Frost (optional)
To frost, invert the cake onto a plate or cutting board.
Spread ganache on the warm cake.
Let the ganache stand until it is firm enough to cut without smearing, about 1 hour.
Nutrition, whole recipe (rough)
What these numbers assume: 7 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Chocolate | 1 oz (28g) semisweet | 155 |
| Butter | 1 tbsp (14g) | 102 |
| Tofu | 100g firm | 76 |
| Sugar | 1 tbsp (12.5g) granulated | 49 |
| Vanilla | 1 tsp extract (4ml) | 12 |
| Vinegar | 1 tbsp (15ml) distilled | 3 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
Steps grouped into stages for easier reading; the method is the source's own.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
-
Vanilla + chocolatetop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
-
Flour + tofutop 8% of all pairsSmell alikestrongCooked together350 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Vanilla + cocoa powdertop 10% of all pairsSmell alikemoderateCooked together2,189 recipes
Shared aroma: sotolon (curry, maple).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Silken tofu
- Provides moisture and a dense, tender crumb without eggs.
- Distilled white vinegar
- Reacts with baking soda to help the cake rise and lighten.
- Brown sugar
- Adds moisture, sweetness, and a deeper, caramel-like flavor.
- Unsalted butter
- Adds fat for richness and a tender texture.
- All-purpose flour
- Provides the structure that holds the cake together.
- Dutch-process cocoa powder
- Supplies the chocolate flavor and color of the cake.
The step that matters
Bake until just almost firm. Baking past the point where the center is almost set dries the cake and makes it crumbly. Pulling it out while the center is still slightly soft lets it finish setting as it cools.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
You might also like
Chocolate Cream171 recipes
Vanilla Ice Cream108 recipes
Chocolate Cookies76 recipes
Chocolate Fudge55 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.