3 cups semisweet chocolate chips (such as Hershey's® Special Dark)
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1 (14 ounce) can sweetened condensed milk
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¼ cup butter
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1 ½ teaspoons pure peppermint extract
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1 pinch salt
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½ cup crushed peppermint candies, or more to taste
Instructions
Combine chocolate chips, sweetened condensed milk, butter, peppermint extract, and salt in a large microwave-safe bowl.
Heat in the microwave on medium-high until chips are melted, 5 to 6 minutes, stirring every 2 minutes.
Pour chocolate mixture into an 8x8-inch silicone baking dish; top with crushed peppermint candies. Lightly press candies, using the back of a spoon, into chocolate mixture. Refrigerate until set, 1 hour.