Peanut Butter-Milk Chocolate Rice Krispies® Balls
Ingredients:
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2 cups smooth peanut butter
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½ cup unsalted butter, at room temperature
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3 ½ cups confectioners' sugar
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1 tablespoon pure vanilla extract
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1 teaspoon kosher salt (such as Diamond Crystal®)
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3 cups crispy rice cereal (such as Rice Krispies®)
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3 cups milk chocolate chips
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3 tablespoons vegetable shortening
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½ teaspoon flaky sea salt, or to taste