“Blotted pear pockets soften inside cocoa batter while toasted hazelnuts keep the squares from tasting flat.”
Cocoa, oil, and yogurt make a fudgy square with no creaming, no melting, and no waiting for butter to soften. Pears are an underused baking fruit, going soft and almost custardy against chocolate rather than collapsing into liquid the way berries do. One bowl of dry, one of wet, and a lined pan.
Pears hold more water than they look like they do, so blot the cubes until the cut faces stop glistening. The bigger risk is the oven, because cocoa batters travel from fudgy to dry across about four minutes and the dark color hides every visual cue. Go by the thermometer and by moist crumbs on a skewer.
🍐 The promise: An hour and a half yields sixteen squares of a cocoa cake that stays fudgy for days, because the yogurt and the pear keep it damp.


Cocoa hides every visual cue a cake usually gives, so the skewer and the thermometer take the place of judging the color of the surface.
The fruit pockets sink slightly and darken as the tray cools, which is what makes them visible in the cut face of each square.
Line a 9-inch square pan with parchment and heat the oven to 350°F (175°C), with a rack in the middle position. A light-colored pan keeps the cocoa edges from scorching.

Peel and dice the pears into ½-inch cubes and blot them on paper towel until the surfaces stop glistening. Toast the hazelnuts in a dry pan until fragrant, then rub off the skins and chop them.

Whisk the flour, cocoa, baking powder, and salt together until the color is a uniform brown with no pale pockets, then stir in the chopped hazelnuts so they are suspended in the dry mixture.

Beat the eggs, yogurt, sugar, and oil until glossy and slightly thickened, then fold the dry mixture in followed by the pears. Stop as soon as the batter is uniform; it will be thick and slow to level.

Spread the batter into the pan and bake 32–38 minutes, until the surface loses its shine, a skewer comes out with moist crumbs, and the center reads 200°F (93°C). The pear pockets will look darker and slightly sunken.

Let the traybake cool 25 minutes in the pan so the fudgy crumb firms up, then lift it out and cut sixteen squares. Warm cocoa cake tears rather than slices.

The crumb is fudgy but set, the edges have pulled from the parchment, and soft pear pockets dot every square. Fruit that was not blotted leaves wet holes rather than soft pockets; pat the cubes until they stop glistening before they go near the batter.
Toast the hazelnuts before chopping and fold the darkest pieces through the cocoa batter.
🥗 Nutrition, roughly: about 180 calories per serving. Estimates only; brands, cuts and portion sizes change the numbers.