Put the onion, carrots, and potatoes in the slow cooker. Lay the meat on top.
½ sweet onion chopped, About ½ lb baby cut carrots, 1 large russet potato cut into large chunks
In a small bowl whisk the remaining ingredients and pour over the meat and vegetables.
1 lb Top Sirloin with visible fat removed, 1 large sweet potato cut into large chunks, ½ cup of water, 1 tablespoon soy sauce, 1 tablespoon Worcestershire sauce, 1 tablespoon whole wheat flour, ½ teaspoon dried rosemary, ½ teaspoon dried thyme, ¼ teaspoon fennel seeds, fresh ground black pepper
Cover and cook on high about 3 hours.
When it's done cut it thin and serve with the potatoes, carrots and a drizzle of the liquid.