Separate the egg from egg yolk, setting egg whites aside until later. Whisk egg yolks and sugar together until creamy.

Sift together dry ingredients then gradually stir into buttermilk. Stir in 4 tbs of melted butter and rest for 30 minutes to let the baking powder make the batter nice and fluffy.

Beat egg whites until stiff and gently fold into batter just before cooking.

Place Ebelskiver pan over medium-high heat and melt butter in microwave. Use a pastry brush to coat the wells of pan with the melted butter.

Spoon batter into each well until 3/4 full. If you want to add jelly in the middle, add a bit less batter and add a small amount, topping it with just enough batter to cover the jelly. Cook until the edges look brown. Using a knitting needle, fork or skewer turn the pastry. You can either flip it 180 degrees, all the way over to the other side, or for more of a round pastry, you can turn it 1/4 at a time and add more batter as your turn. 

Sprinkle some powdered sugar on top and serve.These are so fun and can be served so many ways! Serve with a side of jelly, syrup, sautéed apples, or even nutella.