Banana Coconut Caramel Upside Down Cake * 1 BettyCrocker yellow cake mix * 3 whole eggs * 1/4 cup oil * 1/2 cup sour cream * 1/2 cup water * 6 bananas sliced 1/4 inch thick * 1 1/2 cups shredded coconut * 1 cup packed brown sugar * 1/2 cup butter, divided * 2 Tablespoons lemon juice
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