This recipe wasn't that difficult and the dough is super easy to work with. This would be an easy-do project to do with students. This is what you will need:
1/2 cup sugar
1/2 cup vegetable shortening
1 tsp. vanilla extract
2 1/2 cups flour
2 tsp. baking powder
1/4 tsp. salt
Blueberry Jam or any preserves of your choice
1 egg white, beaten with 1 TBSP milk
Preheat the oven to 355. Beat sugar and shortening until light and fluffy. Beat in eggs and vanilla. In another bowl combine the flour, baking powder and salt. Stir this into the mixture to form a dough.
Beat egg white with 1 TBSP milk. Brush the tart with egg white wash and sprinkle lightly with sugar. Prick the top of the tarts with tines of a fork. Place in oven and immediately turn down to 350. Bake for 10 minutes, remove from oven and prick again with a fork. Bake 15 more minutes (edges will be brown). Remove from baking sheet, to a flat surface. Cool and wrap in plastic. Store in the refrigerator.
I got 10 poptarts out of this recipe and used 1/2 pint of blueberry jam.