Preheat the oven to 180ºC.

Whisk the Nola Original Mayonnaise, cream, milk and thyme together and season.

Grease an ovenproof dish with butter and layer a third of the potatoes inside.

Top with half the onions, season well and pour over a third of the mayonnaise mixture.

Repeat the layers, finishing with potatoes and pour over the remaining sauce.

Cover with foil and bake for 45 minutes. Uncover, brush with Nola Original Mayonnaise and scatter over the cheese.

Bake for a further 15 minutes until golden brown and crispy.