Combine yeast with warm milk, then set aside until it's ready.
Mix flour, salt, and sugar in a stand-mixer bowl or any bowl if kneading by hand.
Add butter and yeast mixture.
Combine and knead until you get a smooth dough, then place in an oiled bowl.
Cover with a clean kitchen cloth and set aside in a warm place until it doubles in size.(NOTE: Generally takes about 90 minutes for me.) Divide into six sections and form each portion into a ball.
Place them on a baking tray lined with parchment paper ---- keep some space in between since they will be expanding.
Cover again with a cloth, then set aside until they expand (thirty to forty-five minutes).
Preheat oven to 200°C (375°F).
Combine egg and three tablespoons of cold or room-temperature milk.
Brush your Swedish breakfast rolls with the egg and milk mixture.
Sprinkle with sunflower seeds, particularly the top part of the rolls.
Place in the oven for twenty to twenty-five minutes or until they turn golden.
Remove from the oven and transfer to a rack to cool.
Serve your Swedish bread rolls with butter, marmalade, or your favourite cheese --- enjoy!