An apparatus for spreading particles, such as seasoning, on both sides of products conveyed in a product stream includes first and second conveyors arranged at different elevations, and a particle dispensing device arranged above a vertical overlap between the two conveyors such that particles dispensed by the spreading device falls on the product stream on the first conveyor and the product stream on the second conveyor. A turning apparatus is arranged between an outlet of the first conveyor and an inlet of the second conveyor such that the product stream is turned over as it is being deposited from the first conveyor onto the second conveyor. The turning apparatus includes a discharge lip on the outlet of the first conveyor, and a curved turning wall arranged spaced from the discharge lip.