Steps: 1. Preheat oven to 180C. 2. Line muffin tin with paper casing and set aside. 3. Sift flour into a mixer bowl. 4. Add sugar, butter, eggs and vanilla essence into the flour. 5. Beat the mixture until smooth and pale, about 2-3mins. 6. Fold in ground hazelnut and chocolate chips. 7. Spoon batter into the muffin tin until 70% full. 8. Bake in the preheated oven for 25mins. 9. Remove cupcakes from tin and cool on a wire rack.