MUSHROOM & HAM FRITTATA

MUSHROOM & HAM FRITTATAIngredients200 g Button mushrooms, sliced400 g Unpeeled, Desiree potatoes, cut into 2cm pieces2 tbsp Olive oil200 g Swiss brown button mushrooms, trimmed250 g Ham, chopped6 Large free range eggs, at room temperature¼ cup Flat-leaf...