"Perfect for a casual adult birthday celebration, this easy cake recipe tastes just like everyone's favorite cocktail and it couldn't be simpler to make...."
INGREDIENTS
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1-1/2 cups coarsely crushed pretzels
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1/2 cup sugar
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1/3 cup butter, melted
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2 tablespoons bottled nonalcoholic margarita mix
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1 box white cake mix
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1-1/4 cups bottled nonalcoholic margarita mix
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2 tablespoons tequila (optional)
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1/3 cup oil
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1 tablespoon grated lime peel (about 1 lime)
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3 egg whites
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1 container (8 oz) frozen whipped topping, thawed
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Additional lime slices and/or green decorating sugars, if desired