A comforting Walloon gratin of whole braised Belgian endives layered with sliced potatoes, draped in velvety nutmeg-spiced cheese cream, and baked until bubbling and deeply golden.
Rub an earthenware gratin dish with garlic and butter. Layer the sliced potatoes on the bottom and arrange the braised endives over the potatoes.
Whisk the double cream with minced garlic, nutmeg, salt, and pepper.
Pour the seasoned cream evenly over the endives and potatoes, then scatter the grated cheese heavily over the surface.
Bake in a preheated oven at 190°C (170°C fan) for 25 minutes until the gratin is bubbling and the cheese crust is deeply golden brown.