Preheat your oven to 375°F
While your oven is preheating it’s time to make the dough for the crust. Check out my recipe for the tart crust recipe for step-by-step instructions on how to make it.
Once your tart crust dough has been made, you will want to roll it out on a lightly floured surface, until it is thin. Then transfer it to your greased tart pan.
Press the dough into the pan, so that the edges lay flat. Trim any excess dough that hangs over the top edges.
Press dough edges so that the tart dough snuggly against the top of the pan. Use a fork and poke small holes in the bottom of the dough.
Cover the dough with parchment paper and add pie weights if you have them. These will help hold the crust in place as it bakes.
Place the prepared tart crust in the oven and bake for approximately 15-20 minutes. Remove the parchment paper and pie weights, then bake for an additional 5 minutes.
At this point, the tart crust should be mostly baked, but it’s okay it’s okay if it is a little underdone still. We will bake it one more time.
Now, it’s time to prepare the blueberry filling. In a medium to large saucepan, add the cornstarch and granulated sugar. Toss until they are combined, and no lumps remain.
Add blueberries and toss blueberries until they are covered in the mixture.
Place the pan over medium heat.
Add lemon juice and stir occasionally. Keep a close eye on the mixture stirring often, so that it doesn’t burn.
When the mixture begins to bubble, turn the heat to low, add the cinnamon, and continue stirring for a few minutes. Stir until the mixture thickens.
Once the blueberry filling has thickened, remove it from the heat.
Pour the prepared blueberry filling into the partly baked tart crust. Add the cubes of butter to the top of the tart, leaving space between them.
Prepare the egg wash and brush it onto the crust.
Bake the prepared blueberry tart for approximately 10 minutes, or until the crust is a golden brown and the filling bubbles around the edge.
Remove it from the oven and allow it to cool.
Once the tart has cooled, you may choose to serve it warm or chill it in the fridge before serving.
To serve, add a bit of whipped cream, or vanilla ice cream to each serving. Then serve and enjoy your delicious homemade blueberry tart!