Prune Spice Cake

This prune spice cake is the kind of old-fashioned recipe your grandmother kept on an index card and pulled out every fall. Oil-based instead of butter, which means it stays moist for days. The buttermilk reacts with the baking soda for a tender crumb, and 8 ounces of strained prunes add a deep, almost caramel sweetness that sugar alone can’t achieve.

Prunes in cake batter might not sound glamorous, but they’re a secret weapon. They add natural moisture, richness, and a concentrated fruit sweetness that blends seamlessly with cinnamon and nutmeg. You won’t taste “prune” in the finished cake. You’ll taste a deeply spiced, incredibly moist cake that makes people ask for the recipe.

The oil in the batter keeps the crumb tender and the cake from drying out, even after a couple of days on the counter. Butter-based cakes firm up as they cool, but oil-based cakes stay soft and sliceable. A cup of chopped pecans adds crunch that contrasts with the soft crumb.

Bake this in a bundt or angel food pan. The center tube ensures even baking in this dense, heavy batter. Test with a toothpick at 45 minutes.

Kitchen Tips

• Use strained (pureed) prunes, not whole pitted prunes. The puree distributes evenly through the batter
• Grease and flour the bundt pan thoroughly. This cake is moist and sticks aggressively to ungreased pans
• Let the cake cool in the pan for 15 minutes before inverting. Too soon and it falls apart; too late and it cements to the pan
• This cake needs no frosting. A dusting of powdered sugar is all the finish it needs

Variations

• Cream cheese glaze: Drizzle with a thin cream cheese and powdered sugar glaze for a tangy-sweet contrast
• Date spice cake: Replace the prunes with strained dates for a slightly sweeter, more toffee-like flavor