Using a standing mixer, combine the lukewarm water and yeast and let sit for 5 minutes to allow the yeast to dissolve.
In a medium bowl, lightly whisk evaporated milk, sugar, salt, egg and vanilla until lightly combined.
Add it to the yeast mixture
Mix in 2 C of flour and mix with a dough mixer for 2 minutes
Add in the melted butter and mix until dough is sticky and smooth
Mix in the remaining flour to make a soft dough
Place the dough onto a lightly floured cutting board and knead the dough for 2 minutes
Place the dough into a greased bowl and cover loosely with a clean kitchen town
Allow to rise for 2 hours or until doubled in size
Punch the dough in the bowl
Roll the dough onto the lightly floured cutting board into about ¼ inch thick
Cut out 2 ½ in squares
Make a indent in the center of each square and fill in with the preserves
Roll the dough into a ball and make sure the dough covers up the jam
Preheat a dutch oven with 3-4 inches of oil
Once the dough is hot, drop in a few balls of dough at a time into the oil
Make sure to flip the balls of dough after 20 seconds.
Once they are a golden brown, remove and place onto paper towels
Toss the beignets into powdered sugar before serving.