Roughly chop the walnuts. Finely chop dates. Peel, quarter, core and grate the pear. Butter a 12-piece muffin tin
Mix flour, oat flakes, sugar, baking powder, cinnamon, nutmeg, baking soda and salt in a bowl. Melt butter and mix it hot with buttermilk, maple syrup, egg and syrup. Add to the dry ingredients and mix everything briefly until all ingredients are just mixed
Briefly fold in the walnuts, dates and pear. Spread the dough evenly on the muffin tin. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for 18-20 minutes. Make a cooking test with a wooden skewer