Preheat the oven to 180C/350F. Line a large baking tray with parchment paper, and set aside.
In a large mixing bowl, prepare the Greek yogurt dough with sugar and mix well, until combined. Using your hands, shape the dough into a thick, smooth ball.
Flour a kitchen surface and add a tablespoon of flour on top of the ball of dough. Transfer the ball of dough onto the floured surface, and knead several times.
Using a rolling pin, roll out the dough, forming a rectangular shape, about 12 inches by 6 inches. Using a sharp knife (or pizza cutter), slice once length-ways, and 7 times the other way, to form 16 uniform rectangles.
Place 8 of the rectangles on the lined baking tray, evenly spaced apart. Place 1 tablespoon of jam onto each rectangle. Place the other 8 rectangles on top of each one. Using a fork, press along each side of each pop tart, sealing it up completely. Using a pastry brush, brush the tops of each pop tart with milk.
Bake the pop tarts for 15-20 minutes, or until golden on top. Allow pop tarts to cool, before glazing.
While the pop tarts are cooling, prepare your glaze by combining the powdered sugar with the vanilla extract and yogurt. Whisk until a thick frosting remains. Using a spoon, spoon out frosting over the tops of each pop tart, spreading it slightly. Top with sprinkles, if desired.
Notes
* White sugar, monk fruit sweetener, or baking Splenda works** Start with 2 tablespoons. If your glaze is too thick, add more. If it is too thin, add extra powdered sugar. Don't have self-rising flour? You can make your own. Air fryer option: Prepare the pop tarts as directed. Place pop tarts in a single layer in a lined air fryer basket. Air fry at 350F for 10 minutes. Let them cool before glazing. TO STORE: Homemade pop tarts must be stored in the fridge, in a sealed container. They will keep fresh for up to 5 days.TO FREEZE: Place leftover pop tarts in a ziplock bag and store in the freezer for up to 6 months. TO REHEAT: Re-heat pop tarts by thawing them to room temperature before re-heating in the oven (350F for 10 minutes) or in the air fryer (370F for 3 minutes).