Easy Decorated Krispy Kreme Donuts (No Mixer Needed)

Name: Easy Decorated Krispy Kreme Donuts (No Mixer Needed)
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: American
Ingredients: 1 cup warm milk (240 ml); 1 tablespoon dry yeast (10 g); 2 tablespoons sugar (25 g); 1 teaspoon vanilla extract (5 ml); 2 large eggs; 2 tablespoons butter (melted (28 g)); 4 cups all-purpose flour (480 g); 1/2 teaspoon salt (3 g); 50 g butter (about 3.5 tablespoons); 50 ml double cream or heavy cream (about 3.5 tablespoons); 100 g white chocolate (chopped (about 3.5 oz)); 100 g dark chocolate (chopped (about 3.5 oz) OR ½ cup of Nutella); 100 g Biscoff spread (about ⅓ cup)