Add Ham cubes, cheddar cheese, sour cream, diced mushrooms, diced bell pepper, and diced green onions. And stir to combine.
Add Heavy Cream, Milk and Pepper. Stir to combine. Add salt to taste.
Grease pan. You can use a Stackable pan insert or a spring form pan. Please note. A Springform pan will need to be wrapped in foil so it doesn't leak.
Add 1 to 1 1/2 cups water to Instant Pot.
Place pan on trivet and set to Manual for 25 minutes. Quick Release pressure when complete.
Run a knife around the inside of the pan to loosen and flip out onto a plate.
*optional - Sprinkle with additional cheese and green onions.
Garnish with Salsa as desired*Sometimes a quiche will have clear liquid run off. This is due to the pressure cooking of the milk, cream and cheese separating under pressure. Blot the excess liquid if needed with a paper towel.