How to Make It
Heat oil in a medium skillet over medium-high. Add beef and onion; cook, stirring to crumble, until starting to brown, 3 minutes. Add mushrooms; cook, stirring occasionally, until mushrooms are starting to brown, 6 minutes. Add garlic, olives, paprika, cumin, and cinnamon; cook until mushrooms are very tender and have released most of their liquid, 3 minutes. Stir in tomatoes, and cook 1 minute, stirring occasionally. Transfer filling to a bowl, and let cool 5 minutes.
Arrange 4 gyoza wrappers on work surface. Place about 1 1/2 tablespoons filling in center of each wrapper. Brush edges of wrappers with egg; fold wrappers over, pinching edges to seal. Repeat process with remaining wrappers and filling.
Place 4 empanadas in single layer in air fryer basket, and cook at 400°F until nicely browned, 7 minutes. Repeat with remaining empanadas.