Preheat the oven to 350 degrees F. Spread the flour on a baking sheet and bake, stirring halfway through, until lightly toasted, 10 minutes. Let cool on the baking sheet; whisk to break up any clumps.
Beat the butter, brown sugar and salt in a large bowl with a mixer on medium-high speed until fluffy, 3 to 5 minutes. Reduce the mixer speed to low; beat in the toasted flour, then the lime juice and vanilla. Stir in the mini white chocolate chips and sprinkles until just combined. Refrigerate until the dough is firm but not hard, about 30 minutes.
Line a baking sheet with parchment paper. Roll tablespoonfuls of dough into balls and arrange on the prepared pan. Refrigerate until firm, at least 30 minutes or overnight.
Combine the white chocolate chips and shortening in a large microwave-safe bowl. Microwave in 30-second intervals, stirring, until melted, 1 to 2 minutes. Gently drop a dough ball into the melted white chocolate and spoon more chocolate on top to completely coat. Lift out with a fork, letting any excess chocolate drip back into the bowl; return to the baking sheet. Sprinkle
with nonpareils. Repeat with the remaining dough balls. (If the melted chocolate hardens, microwave 30 seconds. If the dough becomes too soft, refrigerate 15 to 20 minutes.)
Tools You May Need
Photograph by Ryan Dausch
Tools You May Need
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