Grab a medium bowl and whisk French onion soup, the soup mix, and beef broth together till it’s all blended good.
Toss those frozen meatballs into your crock pot nice and even.
Pour the onion soup mixture right over the meatballs, makin’ sure every meatball is coated in that tasty sauce.
Put the lid on, seal up your pressure cooker’s sealing ring, and pick your heat: low for 5-6 hours or high for 2-3 - depends on your schedule.
About 30 minutes before you wanna eat, combine your cornstarch and water slurry and stir it gently into the pot.
Let the sauce thicken up as it keeps cookin’ for those last few minutes.
Sprinkle mozzarella cheese over the top and then cover again for 10 to 15 minutes, till melted just right.
Finish with a sprinkle of fresh thyme or parsley, serve warm, and get ready for that first bite!
Notes
Serve over mashed potatoes or egg noodles with a side of green beans. Optionally garnish with fresh herbs for added flavor and color. Use low-sodium ingredients for balance.