I made this for dinner I think on Friday. And hubby asked for 2nds :) It had a really mustard-y taste :) it didn't specify whether powder mustard or prepared so let me know how it tastes with prepared since I used powder :)
1Mix hamburger, oats, onion, salt and pepper; brown. Sprinkle with flour. Add water and simmer. Add ketchup, worcestershire, mustard and brown sugar. Simmer till heated through. Serve over buns. Enjoy!