"These peanut butter marshmallow krispie topped brownies are the perfect after school treat. Tons of chocolate flavor with just a hint of peanut butter...."
INGREDIENTS
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1 (18 ounce) brownie mix
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4 cups mini-marshmallows
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1-1/3 cups semi-sweet chocolate chips
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1 cups creamy peanut butter
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3 tablespoons butter
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2 cups crispy rice cereal