INGREDIENTS
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heart sandwiches
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3 tablespoons unsalted butter, plus extra for the pan
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10 ounces marshmallows
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¾ teaspoon kosher salt
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2 tablespoons creamy peanut butter (substitute: sunflower seed butter or omit)
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4 ½ cups crispy brown rice cereal
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sprinkles (optional)
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chocolate filling
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4 ounces bittersweet chocolate, chopped into small pieces, or 4 ounces of bittersweet chocolate chips
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1/3 cup heavy cream