Can I make this on the stovetop instead of a pressure cooker?
Yes. Brown the sausage in a large pot, add remaining ingredients, and simmer 15–20 minutes until potatoes are tender, stirring occasionally.
Can I substitute the cream of onion soup mix?
You can use cream of potato or cream of chicken soup mix in the same amount, though the onion flavor will change.
How far ahead can I prepare this?
Make the soup base up to 2 days ahead; store covered in the refrigerator. Reheat gently on the stovetop and add fresh scrambled eggs and cheese just before serving.
Is this recipe freezer-friendly?
Yes, freeze the cooked soup (without egg and cheese toppings) in airtight containers up to 3 months. Thaw overnight and reheat on low heat, adding toppings fresh.
What if I don't have frozen hash browns?
Use 1.5 cups diced fresh potatoes (about 2 medium potatoes); add 2–3 extra minutes to pressure cooker time to ensure they're tender.