Apple, Onion and Cheese Galette – La Classe de Cuisine

Ingredients

• 165 g plain flour, plus extra to dust
• 100 g corn meal
• 1/2 tsp salt
• 165 g unsalted and very cold butter
• 100 – 120 ml iced water
• 1 medium free range egg to glaze
• 60 g unsalted butter
• 3 large onions, sliced
• 4 eating apples ( like Braeburn) peeled and sliced
• 150 g strong cheddar + 150 g Swiss cheese
• large pinch cayenne pepper
• 3 fresh rosemary springs + 2 fresh thyme sprigs, finely chopped