Swedish Nutella Spelt Kladdkaka (with Nutella Cream)

Name: Swedish Nutella Spelt Kladdkaka (with Nutella Cream)
Prep time: 5 min
Cook time: 30 min
Total time: 35 min
Cuisine: European
Ingredients: 100g (¼ cup + 3 tbsp) butter; 50g (1¾ oz) milk chocolate; 75g (2½ oz) Nutella; 50ml brewed coffee (see note 1); 2 eggs (medium); 60g (¼ cup + 1 tbsp) brown sugar; 60g (¼ cup + 1 tbsp) white sugar; 40g (⅓ cup) spelt flour (see note 2); 15g (2 tbsp) cocoa; icing/confectioners'/powdered sugar; 300ml (1 cups + ¼ cup) whipping cream; 150g (5¼ oz) Nutella