This is a pretty ideal weekday meal since you just throw a few things in and it is done!
Basically the idea is that you are going to layer the instant pot so that the stuff at the bottom cooks in liquid, and then stuff higher up from it will steam. You don't need a rack if you layer it properly. If you wanted to use a rack, then you could put it above the bottom layer.
- 1/2 lb of potatoes
- 1 lemon
- green beans and/or carrots
- 3-4 white fish (tilapia, etc.) fillets
- butter, salt, pepper, various spices
- Cut potatoes in small chunks. Maybe quartering for small red potatoes. Cut enough to layer the bottom of the instant pot where you can't see the bottom. Add salt, garlic, and a little butter, and maybe a little spice that is good for potatoes (thyme, paprika, dill, etc.). I'd use standard potatoes, not sweet potatoes, since the sweet potatoes turn pretty mushy.
- Add about 1/2 C to at most 1 C of liquid. To add most flavor, I recommend chicken broth / stock. Mix with potatoes. You can turn on saute mode at this point if you want. This might seem like too little liquid but I've found it to be OK.
- Next, layer in some other vegetable or vegetables. I like green beans. You can use carrots, leafy greens like kale, etc. Don't mix with potatoes, you want these on top. Again, you want a good layer. Add some salt and a little butter. Can also put a little more garlic if you want.
- Last, put 3-4 white fish fillets on top. It's OK if they overlap a little to fit in a layer. Sprinkle with salt and pepper. You might want paprika or some other seasonings (I like dill). Put a dollop of butter on each fillet, and either lemon slices (squeezed) or squeezed lemon juice on top of each fish.
- Cook under high pressure. 2-3 minutes if the fish is not frozen, and 3-4 minutes if it is frozen. Quick release. This sounds surprisingly fast, but the pressure cooks quickly. If for some reason the food was not done, could saute more after finishing. You can also add more lemon juice at the end if you want.
It might be more flavorful to fry the potatoes for a bit to get them a little crispy with onions/garlic. But that might take away from the ease of preparation of the dish.