01 -
Combine flour, garlic powder, onion powder, salt, pepper, and paprika in a shallow wide dish and mix well.
02 -
Coat each cubed steak thoroughly on both sides with the flour seasoning mixture; set aside.
03 -
Heat vegetable oil in a large skillet over medium-high heat. In batches of two, quickly brown cubed steaks on each side, just to develop color without cooking through. Set browned steaks aside.
04 -
Place the chopped celery, diced onion, and chopped carrots in the base of a 5-6 quart slow cooker.
05 -
Arrange browned cubed steaks evenly on top of the vegetable layer in the slow cooker.
06 -
Whisk together minced garlic, stewed tomatoes with juice, brown sugar, Worcestershire sauce, and brown gravy mix in a small bowl until fully combined.
07 -
Pour the sauce mixture over the steaks and vegetables. Cover and cook on low for 6 to 8 hours or on high for 4 to 6 hours, until meat and vegetables are tender.
08 -
Remove from slow cooker and plate with preferred sides such as mashed potatoes, rice, or vegetables. Enjoy warm.