Preheat the oven to 375 degrees.
Open one package of the defrosted pie dough and place it into the greased glass pie dish.
Open all of the cans of pie filling and place a different spoon in each one. Review the design in the picture and begin to fill the pie in as displayed with the blueberries taking up half of the pie from 6 'clock to 12 o' clock, the apples from 12 o'clock to 3 o'clock, and the cherries from 3 o' clock to 5 o' clock. Use only enough to mound the fruit up in its section and reserve the rest for another project.
You will use all of the blueberry, but have some leftover apples and cherries... these are pretty good on pancakes for breakfast.
Put the pie in a cool, safe place while you lay out the final piece of pie dough on a kitchen surface, sprinkled with a little flour to prevent sticking.
Cut out 4 Texas shapes using the Texas cookie cutter (link above). Cut out 1 star or cut it freehand with a knife.
To finish the pie, place the star over the blueberries in the upper corner. Get it just where you want it and then lay the Texas dough sections down around the pie to fill in. Crimp the edges of the pie and make any final adjustments to make it look pretty.
For the egg wash, beat an egg in a coffee cup, thinning with water if necessary to make spreadable.
Using the pastry brush, brush all of the dough. Sprinkle with sugar if desired. The sugar increases browning and you will likely have to use the foil method to protect the crust from over-browning at some point, but the sugar garnish looks extra professional!
Bake the pie dough for 40 minutes. If at any time the outside crust begins to get very dark remove the pie and gently scrunch the foil around the edges. It just needs to cover up the surface of the crust to protect it from browning any further. This will allow the crust over the fruit to continue to bake (it takes a little longer.) You may add 10-12 minutes longer if needed to finish browning the crust, depending on your oven.
When done, remove the pie and serve as usual. Vanilla ice cream is the best accompaniment with hot pie!