On a lightly floured surface, divide Cornmeal Short Dough into 6 equal portions. Roll each portion into a 5-inch circle. Transfer dough to 6 (3-inch) removable-bottom tart pans, pressing into bottom and up sides. Top each tart shell with a piece of parchment paper, letting ends extend over edges of pans. Add pie weights.
Bake for 15 minutes. Carefully remove paper and weights. Let cool completely on a wire rack.
In a medium saucepan, bring butter, ⅓ cup (66.5 grams) sugar, orange zest and juice, and lime juice to a boil over medium heat, stirring until sugar is dissolved.
In a medium bowl, whisk together egg yolks and remaining ⅓ cup (66.5 grams) sugar. In a slow, steady stream, add hot butter mixture to egg yolk mixture, whisking constantly. Return yolk mixture to saucepan, and cook, stirring constantly, until thick enough to coat the back of a spoon. Remove from heat. Using a fine-mesh sieve, strain filling into a small bowl. Divide filling among cooled tart shells. Cover and refrigerate until filling is cold, about 1½ hours.
In the top of a double boiler, whisk together egg whites, honey, and salt. Cook over simmering water, stirring constantly, until a candy thermometer registers 140°F (60°C). Transfer to the bowl of a stand mixer fitted with the whisk attachment, and beat at high speed until stiff peaks form, 8 to 10 minutes. Pipe meringue over cooled tarts. Using a kitchen torch, brown meringue. Serve immediately.
Recipe by Bake from Scratch at https://bakefromscratch.com/citrus-tartlets/