Heat the oil in a 4-quart saucepan over medium heat. heat onion, stirring occasionally, until browned, 8 to 9 minutes.

Add turkey and cook, breaking up with a wooden spoon, until cooked through, 4 to 5 minutes.

Add remaining ingredients and bring to a boil. Reduce heat to medium and cook, stirring occasionally, until liquid thickens, 20 minutes.