step one, Activate the yeast

1. Start by dissolving active dry yeast in warm water with sugar. Let it sit for about 5-10 minutes until it becomes frothy. This ensures the yeast is active and ready to help your dough rise.

step two, Prepare the dough

1. In a large bowl, combine all-purpose flour, sugar, milk, and egg. Add the activated yeast mixture and softened butter, then mix everything together. Knead for about 15 minutes until smooth and elastic. Use a stand mixer with the dough hook attachment on medium speed.

step three, Proof the dough

1. Cover the dough and let it rest in a warm place for about an hour and thirty minutes (1h 30 min), or until it doubles in size. This step is crucial for light, fluffy Nutella-filled donuts. If you have a dough proofing machine set it at 30°C or 86°F

step four, Roll and shape the dough

1. Once the dough has proofed, punch it down gently. On a floured surface, roll out the dough to about 1/2 inch (1.25 cm) thickness. You want it thick enough so that your donuts hold their shape but not so thick that they won’t fry properly. Use a cookie cutter or a sharp knife to cut the dough into heart shapes. You can also experiment with different shapes or sizes if you prefer!

step five, Second proofing

1. After cutting the dough into shapes, cover the donuts with a clean towel and let them proof for an additional 30 minutes in a warm place. This allows the donuts to puff up and ensures they’ll be soft and fluffy after frying.

step six, Fry the donuts

1. Heat oil in a deep pan or fryer to 350°F (175°C). It’s crucial to have the oil at the right temperature—too hot, and the donuts will burn on the outside but stay raw inside; too cold, and they’ll absorb too much oil. Fry the donuts in batches, making sure not to overcrowd the pan. It will take about 4 minutes on each side. Use a scooper to remove them from the oil once they’re golden brown and crispy.

step seven, Coat and fill

1. Place the fried donuts on a paper towel-lined plate to absorb excess oil. While they’re still warm, coat them in a mixture of sugar and cinnamon to give them that perfect sweet touch. Allow them to cool slightly, then make a small slit in each donut and fill them generously with Nutella using a piping bag.

step eight, Serve and enjoy!

1. Your Nutella heart donuts are now ready to enjoy! These are perfect for a Valentine’s Day breakfast or dessert. Serve them warm, and get ready to share the love with your special someone (or enjoy them on your own)!