Blueberry cobbler made with a top crust

Blueberry filling:
1 pint blueberries
1/3 cup blueberry pie filling
1/2 teaspoon salt
1/4 cup sugar
Batter:
1/4 cup melted salted butter
1/4 cup sugar
1 tablespoon imitation vanilla, or 1 teaspoon pure vanilla
1 cup buttermilk
1/4 teaspoon cinnamon
1/4 teaspoon baking soda
1 and 1/4 cup self rising flour
1 large egg
1 sheet pie crust:
Brush with egg wash
Dust with sugar and cinnamon
Bake on 350° for 45 minutes
Enjoy!!