"Marshmallow Crunch Brownie Bars are a totally indulgent brownie with three kinds of chocolate, an awesome marshmallow layer and the best brownie base...."
INGREDIENTS
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3/4 cup butter, melted
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2 1/4 cups white sugar
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2 teaspoons vanilla extract
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3 eggs
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1 1/3 cups all-purpose flour
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3/4 cup unsweetened cocoa powder
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1/2 teaspoon salt
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3/4 cup dark chocolate chips
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1 bag ( 16 ounces) miniature marshmallows
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2 cups dark chocolate chips
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2 Tablespoon unsalted butter
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1 1/4 cups Nutella
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4 cups Rice Krispies cereal