Start by spraying the inside of a 6-quart slow cooker with cooking spray to prevent sticking.
Add the cut kielbasa pieces into the slow cooker, spreading them out evenly.
Pour in the water to keep everything moist throughout the cooking process.
Sprinkle the au jus gravy mix and ranch seasoning evenly over the kielbasa for a burst of flavor.
Give everything a good stir to ensure the kielbasa is well-coated in the seasonings; this step is essential for flavor distribution.
Layer the sliced butter on top of the seasoned kielbasa, then add the pepperoncini peppers to enhance the taste.
Cover the slow cooker with the lid and cook on high for 2-3 hours or on low for 4-5 hours. Remember, the longer it cooks, the more flavorful it becomes!
Before serving, stir the mixture well to combine all the flavors. Serve over egg noodles, mashed potatoes, or your favorite side. Enjoy the comforting flavors!
Notes
This dish pairs wonderfully with a side of steamed vegetables for a complete meal.