INGREDIENTS
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1 Pkg Betty Crocker Wild Blueberry muffin mix (it is important that you purchase this particular mix)
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2/3 c. sour cream
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1 egg
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1/3 c. milk
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-
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Streusel
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1/2 c. brown sugar packed
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1/3 c. flour
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1/2 tsp. cinnamon
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1/4 c. butter, hard