recipe for cooking a roast in a slow cooker

Ingredients: 3 to 4-pound beef roast (chuck, rump, or round) Salt and pepper, to taste 2 tablespoons olive oil 1 onion, sliced 4 cloves garlic, minced 3 carrots, peeled and cut into chunks 3 potatoes, peeled and cut into chunks 2 cups beef broth 1 cup red wine (optional) 2 tablespoons Worcestershire sauce