In a shallow dish add your flour and the onion powder, garlic powder, salt, pepper and paprika.
Whisk to combine.
Lightly dredge the steaks in the flour and set aside.
Meanwhile in a large skillet over medium high heat melt your butter.
Add your steaks to the butter in the pan and quickly brown on each side. Were just looking for a little color, not to cook through.
Add the steaks to the slow cooker.
Add the carrots, celery and onion on top of the steaks.
Next in a small bowl whisk together the garlic, brown sugar, tomatoes, Worcestershire sauce and brown gravy mix.
Pour the liquid mixture into the slow cooker.
Cover and cook on low 6-8 or high 4-6 until the meat and veggies are tender.
Serve!