01 -
Sprinkle both sides of the beef round steak slices evenly with salt and black pepper.
02 -
Arrange half of the sliced onions and half of the minced garlic at the bottom of a 6-8 quart slow cooker.
03 -
Place the seasoned beef steaks over the onion and garlic layer.
04 -
Sprinkle the brown gravy mix evenly over the steaks.
05 -
Scatter the remaining onion slices and minced garlic on top of the gravy mix.
06 -
Pour the unsalted beef stock over all ingredients in the slow cooker.
07 -
Cover with the lid and cook on low heat for 7 to 8 hours or on high heat for 5 to 6 hours, until the meat is tender.
08 -
During the last 30 minutes of cooking, remove approximately half a cup of the cooking liquid and whisk it together with cornstarch until smooth. Return the mixture to the slow cooker, stir to combine, cover again, and increase heat to high. Cook until the gravy thickens, about 30 minutes.
09 -
Once thickened, serve the steaks hot, ideally over mashed potatoes or your preferred side.