Beef Roast Italian Style

• 1 bag (16 oz.) baby carrots
• 4 to 6 russet potatoes, peeled and cubed
• 2 to 3 pounds beef roast
• 1/2 onion, thinly sliced
• 1 cup Italian salad dressing

Place the carrots and potatoes at the bottom of a 4 to 6 quart crock pot. Place beef on top of potatoes and carrots. Lay onion on top. Pour dressing over beef. Cover and cook on low heat 8 to 10 hours.