1 (4 lb) eye of round roast (or another you prefer)
1 1/2 teaspoons salt, divided
1 teaspoon pepper, divided
1 tablespoon vegetable oil
1 large onion, thinly sliced
1 (12 ounce) bottles root beer ( not diet)
1 (12 ounce) bottles chili sauce
1 garlic clove, minced
Sprinkle roast evenly with 1 teaspoon salt and 1/2 teaspoon pepper.
Brown roast on all sides in hot oil in a large ovenproof Dutch oven over medium-high heat. Add onion. Remove Dutch oven from heat.
Stir together remaining 1/2 teaspoon salt, remaining 1/2 teaspoon pepper, root beer, chili sauce and garlic until blended. Pour root beer mixture over roast mixture in Dutch oven.
Bake covered at 300 degrees for 3 hours or until tender.