Spray the inside of a 6 quart crock pot with nonstick cooking spray.
To the crockpot add 32 ounce bag frozen diced potatoes, 2 (13.5 ounce) packages kielbasa, sliced, 2 cups shredded cheddar cheese, 10.5 ounce cream of chicken soup, 1 cup milk, 1 cup diced yellow onion, 1 cup sour cream, 1 teaspoon onion powder, 1 teaspoon garlic powder, 1 teaspoon dried oregano, 1 teaspoon paprika, ½ teaspoon salt, and ½ teaspoon pepper. Stir so all of the ingredients are incorporated.
Cover and cook on low for 5-6 hours or on high for 3-4 hours or until the potatoes are fork tender.
Optional: sprinkle 2 Tablespoons chopped fresh parsley on top before serving.
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Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.
If you don't like or want as much kielbasa (or maybe just want to make this a bit more affordable), you can use just one package.
Sometimes onions don't get really soft when cooking in the slow cooker. They can still have a little "bite" to them. If you prefer, you can sauté the onions first to make sure they are soft or you can just leave them out if you don't care for that texture.