01 - Pulse flour, powdered sugar, and salt in a food processor. Add cold cubed butter and pulse until mixture resembles coarse crumbs. Add egg yolk and 1 tablespoon cold water, pulsing until dough begins to come together. Add additional water if needed.
02 - Gather dough into a ball, flatten into a disk, wrap in plastic, and refrigerate for 30 minutes to firm.
03 - Preheat oven to 350°F. Roll out chilled dough and press into six 4-inch tart pans. Prick bottoms with fork. Line with parchment paper, fill with pie weights, and bake for 12 minutes. Remove weights and parchment, then bake 8-10 minutes longer until golden brown. Cool completely.
04 - Heat milk, cream, and honey in a saucepan until just simmering. Meanwhile, whisk egg yolks, cornstarch, vanilla, and salt in a bowl.
05 - Gradually whisk hot milk mixture into egg yolks. Return to saucepan and cook over medium heat, stirring constantly, until thickened (3-4 minutes). Transfer to bowl, cover with plastic wrap touching surface, and cool to room temperature.
06 - Whisk eggs, yolks, sugar, lemon juice, and zest in saucepan. Cook over medium-low heat, stirring continuously, until thickened (5-7 minutes) without boiling. Remove from heat and whisk in butter until smooth. Cover with plastic wrap touching surface and refrigerate until set.
07 - Spoon cooled honey custard into tart shells, smoothing tops. Spread layer of lemon curd over custard. Arrange fresh strawberry slices on top. Garnish with mint leaves if desired. Serve chilled.