"The best marble loaf cake recipe - Starbucks has nothing on this! Including sour cream to make our chocolate marble loaf cake moist!..."
INGREDIENTS
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baking spray
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1 ⅔ cups granulated sugar
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¾ cup salted butter (room temperature (1 ½ sticks))
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4 large eggs (room temperature )
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1 tbsp pure vanilla extract
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⅔ cup full-fat sour cream (room temperature)
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2 cups cake flour
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½ tsp baking soda
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⅓ cup unsweetened cocoa powder
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¼ cup boiling water