0.13teaspoonground turmericfilling, for color (optional)
0.25teaspoonfine sea saltfilling
0.75cupfresh lemon juicefilling
0.5cupfull-fat coconut milkfilling, well shaken
2tablespoonlemon zestfilling, from about 2 lemons
1teaspoonvanilla extractfilling
0.25cuppowdered sugarfor dusting
Instructions
Preparation Steps
Preheat oven to 350°F. Line an 8-inch square pan with parchment, leaving overhang on two sides for easy lifting.
Make the crust: In a bowl, whisk flour, powdered sugar, and salt. Stir in melted vegan butter and vanilla until a soft dough forms.
Press dough evenly into the lined pan. Dock lightly with a fork. Bake 15 to 18 minutes, until just set and lightly golden at the edges.
While the crust bakes, make the filling: In a saucepan, whisk sugar, cornstarch, turmeric, and salt. Slowly whisk in lemon juice and coconut milk until smooth, then whisk in lemon zest and vanilla.
Cook over medium heat, whisking constantly, until thick, glossy, and bubbling, 5 to 8 minutes. The whisk should leave trails and the filling should mound slightly.
Pour the hot filling onto the warm crust and spread evenly to the corners.
Return to the oven and bake 8 to 12 minutes, until the surface looks set and no longer jiggles at the edges.
Cool in the pan on a rack for 60 minutes, then refrigerate at least 120 minutes until fully chilled and firm.
Lift out using the parchment, dust with powdered sugar, and cut into 16 squares. Wipe the knife between cuts for clean edges.
Notes
For a brighter yellow, add an extra pinch of turmeric. For ultra-firm bars (warm kitchens), whisk 0.25 teaspoon agar agar powder into the dry filling mix. Store chilled up to 4 days; dust with sugar just before serving.