Ingredients
Equipment
Method
- Step 1: Preheat the oven to 375°F (190°C).
- Step 2: In a mixing bowl, combine flour, butter, and sugar. Blend until it resembles coarse crumbs.
- Step 3: Stir in egg yolk and cold water, one tablespoon at a time, until the dough comes together. Wrap in plastic wrap and refrigerate for at least 30 minutes.
- Step 4: In another bowl, combine rhubarb, apples, sugar, cornstarch, vanilla extract, cinnamon, and lemon juice. Mix well.
- Step 5: Roll out the dough to fit a 9-inch tart pan and transfer it to the pan.
- Step 6: Pour the fruit mixture into the crust and spread evenly.
- Step 7: Beat the egg and brush over the crust.
- Step 8: Bake for 45-50 minutes until the filling is bubbly and the crust is golden brown.
- Step 9: Cool for at least 15 minutes before serving.
Notes
Store any leftovers in an airtight container in the refrigerator for up to three days. You can also freeze the tart for up to three months.
