Activate the Yeast: In a small bowl, mix together warm milk (110°F/45°C), granulated sugar, and active dry yeast. Let sit for 5-10 minutes until frothy.

Add Wet Ingredients: Stir in melted unsalted butter and large eggs to the yeast mixture. Whisk until smooth.

Combine Dry Ingredients: In a mixing bowl, add all-purpose flour and salt to wet mixture. Stir until soft dough forms.

Knead the Dough: Transfer dough to a floured surface and knead for 5 minutes until smooth and elastic.

First Rise: Place dough in a greased bowl, cover with a towel, and let rise in a warm place for 1 hour or until doubled.

Prepare Filling: Beat together cream cheese, powdered sugar, pureed strawberries, vanilla extract, and heavy cream until smooth.

Fry Donuts: Roll out dough to ½ inch thick, cut into shapes, and fry in heated oil at 350°F (175°C) for 2-3 minutes per side.

Fill Donuts: Allow fried donuts to cool slightly, then inject with cheesecake filling using a piping bag.

Coat (Optional): Roll filled donuts in a mixture of granulated sugar and ground cinnamon, if desired. Serve warm.