To the Instant Pot® inner pot, add 1 tbsp oil, salt, and onion. Press Saute and set cook time to 7 Minutes. Once done, add mushrooms and seasonings. Press Saute and set cook time to 10 Minutes.
In a bowl, add the sautéed ingredients together with the olives and chopped egg. Dress with 1 tsp olive oil. Stir and check for seasoning.
Spread a sheet of phyllo dough on a large cutting board. Using a pastry brush, brush the entire sheet of dough with olive oil.
Put a large spoonful of the filling in the bottom center, leaving about 2” (5 cm) of dough on all the edges so that it can be folded over later.
First fold the bottom part in, and then both side edges in as well. There will be a small packet of dough at the bottom; fold it with both hands to the right and then to the left, forming a triangle, until no more dough is left. Trim the excess dough with a knife. Repeat with each piece of dough. Approximately 7 small empanadas can be made with this filling.
On the Instant Vortex control panel, press Bake, set time to 6 Minutes and temperature to 375°F (200°C). Press Start.
Once Add Food appears on the display, add the empanadas. Close the tray and let cook. Once done, remove and serve.