Ingredients
- Nonstick cooking spray
- 1/4 cup unsweetened cocoa powder
- 1/2 cup all-purpose flour (spooned and leveled)
- 1/2 cup sugar
- 1/2 teaspoon baking soda
- 1/4 teaspoon baking powder
- 1/4 teaspoon coarse salt
- 1 large egg yolk
- 1/4 cup buttermilk
- 1 tablespoon vegetable oil
- 1/2 teaspoon pure vanilla extract
- 1 cup fresh or thawed frozen blackberries (5 ounces)
- 1-pint vanilla ice cream, softened
- 1-pint raspberry sorbet, softened
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https://www.marthastewart.com/351435/chocolate-berry-ice-cream-cake