"Sour cream makes this coffee cake super moist and the best part is that it starts with a cake mix. This breakfast cake is an instant crowd pleaser!..."
INGREDIENTS
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1 package yellow cake mix ((mix only, not prepared))
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1 egg
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1 cup sour cream ((may sub plain greek yogurt))
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1/4 cup butter, (melted)
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1 teaspoon vanilla
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1 1/4 cups flour
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2/3 cup brown sugar
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1/2 cup sugar
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1/2 teaspoon salt
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1 teaspoon cinnamon
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1/2 cup butter (8 tablespoons), (chilled and cut into cubes)