Combine yeast and 1/2 cup lukewarm water, and let sit for 5 minutes. Pour into large bowl.
Add lukewarm milk, sugar and salt, and mix.
Add in eggs and shortening and mix until well blended.
Add 3 1/2 cups of flour and mix thoroughly. Then add 1 1/2 cups of flour and mix.
On counter ( or pastry mat) put 1 cup of flour down, and put dough on top. If needed, add in remaining flour. Knead until fully incorporated. dough should be soft, if you add too much flour it will feel tough.
Wash bowl and grease with shortening. Add dough and cover with towel.
Let rise 1 to 2 hours. Punch dough and turn over. Let rise again for 30 minutes.
Butter 2 9" pie cake pans or 9x13 pan.
Roll out dough into large rectangle until the dough is about 3/4-1 inch thick. (doesn't need to be perfect rectangle).
Cut dough into 1-1 1/2 inch squares. Pinch each piece to make rounded top. (think blowing a bubble with gum. Hold in two hands and push out middle with thumbs. Pinch ends together, and it should make a shape resembling a ball-rounded on top). Add to pan(s) until pan is full, making sure they touch each other.
Cover with towel and let rise 30 minutes. Heat oven to 350, and bake about 30 minutes, until golden brown on top.