Step 1

Preheat the oven to 375 degrees.

Step 2

Roll out your bottom crust, then brush with the melted butter.

Step 3

In a medium-sized bowl add the blueberries, lemon zest, and water. Mix together so the berries have a little water on them.

Step 4

In another small bowl, mix together the sugar, salt, and cornstarch. Pour this over the blueberries and mix to coat.

Step 5

Fill the prepared pie crust. Top as you like, either with a top crust, lattice top, or crumb topping. If you are using the crumb topping, combine all ingredients and place them on top of the blueberry filling.

Step 6

Place in the oven and bake for 40-50 minutes. If you need to, put a pie shield around the crimped edges.

Step 7

Combine the sugar, salt, and cornstarch in a small bowl. Mix well.

Step 8

Add 4 cups of frozen berries and lemon zest to the pan. Pour the sugar mixture over this and mix well. Reserve the other 1 cup for later.

Step 9

Turn heat on medium and cook, and add in the water. Make sure you are stirring continuously so it doesn't burn. It will melt and start to cook and thicken.

Step 10

Once it has cooked for several minutes and is thickening, add in the remaining cup of berries. Continue to cook for another 2-3 minutes. Remember to stir, with this much cornstarch, it will burn easily.

Step 11

Remove it from the heat and let it cool.

Step 12

While it is cooling, prepare your pie crusts. Roll out the bottom and fit it into your pan. Fold over the edges and crimp.

Step 13

Decide how you want to do the top crust.

Step 14

Once the filling is cooled to room temp, fill the bottom crust and top as you like.

Step 15

If you are using a top crust, make sure to brush it with egg wash and sprinkle it with sugar.

Step 16

Place in the oven and bake until it is golden brown. You may need to add a pie shield after about 20-25 minutes. My pie took about 40 minutes to bake. Just keep an eye on it.

Step 17

Remove it from the oven and let it cool. Then, place it in the oven. If it is at room temperature, it won't hold as well and will be runnier than if it is chilled overnight in the fridge.