Proof the yeast - Dissolve in 5 min with mixer or resting, then microwave butter, sugar, salt for 1 min and stir until melted. Cool and mix in egg, keeping mixture warm.
Knead the dough - Mix flour, add more for soft dough, knead 6-7 min on floured surface until smooth and elastic. Place in greased bowl, cover and let rise for 2 hours. Prepare dyed eggs during rise.