Place 1 bag (32 ounces) frozen meatballs into the bottom of a crock pot.
Sprinkle 1 packet (1 ounce) au jus gravy mix and 1 packet (1 ounce) ranch dressing mix evenly over the meatballs.
Add 8 mild pepperoncini peppers and pour ¼ cup pepperoncini juice from the jar over the top.
Slice ½ cup butter into pieces and place the butter evenly over the meatballs.
Cover and cook on low for 4-5 hours or on high for 2-3 hours until heated through.
Stir well to combine all the ingredients and coat the meatballs in the sauce.
Serve warm and enjoy!
Notes
These meatballs are delicious served over mashed potatoes or rice. Refrigerate the leftovers in an airtight container for up to 5 days. If you are sensitive to spice use 1/4 cup water instead of the pepperoncini juice.