Heat olive oil in your instant pot on sauté mode Add onions and garlic.
When they are translucent and fragrant add your meat and stir.
Add salt, pepper, crushed red chilies, umami powder & oregano.
Add your pasta sauce stir well.
Turn off sauté mode and close your lid and set to manual pressure.
Cook for 20 minutes and quick release.
In the meantime boil water and cook your orzo till it’s done.
Drain and set aside.
Your beef mixture should be ready now.
You will now add the orzo to your meat and mix well.
Oil your baking dish and set out your hollowed out tomatoes and peppers on it.
Fill your peppers and tomatoes with the filling.
Take your chicken stock and pour it in the bottom of your baking dish and pour some olive oil on top of it.
put your sliced onions and potatoes in between the peppers and tomatoes.
Cover with foil and bake for about 45 minutes covered and then remove the cover and bake for 20 minutes more.
Squeeze the lemon juice on top of the peppers and potatoes and serve hot.