Plum Sheet Cake
AI-generated image
Vegetarian German

Plum Sheet Cake

A German plum traybake built around tart Italian prune plums, a tender vanilla butter base, and a crisp almond-cinnamon finish. The fruit softens into bright, jammy pockets while the lightly crunchy topping adds contrast to each cleanly cut square.

75 min 12 servings Medium
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How to prepare

1
Heat the oven to 180°C conventional, or 160°C fan. Grease a 23 x 33 cm rimmed baking pan and line the base with parchment, leaving two sides overhanging for lifting.
2
Whisk 250 g flour and the baking powder in a medium bowl. In a separate large bowl, beat the softened butter with 100 g of the sugar for 2 to 3 minutes, until pale and fluffy. Whisk in the eggs one at a time, then the vanilla.
3
Mix the dry ingredients into the butter mixture in three additions, alternating with the milk. Stop as soon as no dry streaks remain; the batter should be thick and spreadable.
4
Spread the batter evenly into the prepared pan. Arrange the plum halves in closely spaced rows, cut side up, pressing them gently into the batter without fully submerging them.
Plum halves arranged over cake batter in a sheet pan AI-generated image
5
Make the streusel by mixing the remaining 40 g sugar with 90 g flour, the ground almonds, and cinnamon. Rub in the cold butter with your fingertips until irregular crumbs form, ranging from pea-sized to coarse flakes.
6
Crumble the streusel evenly over the plums and batter, covering the fruit lightly rather than packing it down. Bake on the middle rack for 42 to 48 minutes, rotating the pan once, until the topping is golden and a skewer inserted into the cake base at the center comes out clean or with only a few moist crumbs, not wet batter.
Golden plum sheet cake with cinnamon streusel AI-generated image
7
Cool the cake in the pan for 20 minutes, then lift it out by the parchment and transfer it to a rack until completely cool, about 45 minutes more. Cut into 12 squares and serve at room temperature.

Why this recipe works

Arranging tart prune plums in close rows keeps their flavor central and distributes their juices through the tender vanilla cake. The almond-cinnamon crumble adds a crisp, aromatic contrast while lightly absorbing the fruit juices.

Storage and reheating

How to store it

Store covered at room temperature for up to 2 days, or refrigerate for up to 4 days. Bring refrigerated slices to room temperature before serving for the best texture.

How to reheat it

Warm individual slices in a 160°C oven for 8 to 10 minutes, or microwave briefly for 15 to 20 seconds. Do not overheat, or the fruit may release excess liquid.

Nutrition / serving

336kcal
5.66 gprotein
43.40 gcarbs
16.24 gfat
P
Pantryvale editorial kitchen
Recipe prepared for publication with complete ingredients and ordered cooking steps.
Published 13 Aug 2026 · updated 13 Aug 2026