Polish/Czech Blueberry Buns

We went over for dinner at a Polish friend's house and they served these for dinner. They are fluffy, lightly sweetened buns of steamed dough filled with blueberries. When I investigated the recipe, all I could find was a Czech version. I tweaked it to be just like my Polish friend's recipe. I hope you like it! You need a steamer for this. This recipe looks wildy complicated, but it really isn't...just try it once- I could eat 10 of these things!

• Ready In: 3 hrs
• Yields: 14 buns

Ingredients

• 2 1⁄2-3  cups all-purpose flour
• 3⁄4 cup skim milk
• 4  tablespoons sugar
• 1  tablespoon  yeast (or 1 envelope instant rise yeast)
• 1  egg
• 1  teaspoon salt
• 2  tablespoons  vegetable oil
• 1  cup blueberries
•  melted butter
•  cinnamon sugar

Directions

1. Mix together all dry ingredients in bowl of stand mixer.
2. Mix together milk, egg, and oil in 2 cup measure, add to flour mixture.
3. Knead using dough hook until a very sticky dough forms.
4. Scrape sown the sides of the bowl several times during kneading.
5. Scrape down the bowl to 'neaten up' the dough ball and let rest/rise in a VERY LOW oven, the lowest possible setting-- for 1 hour-- or until double in bulk.
6. Pinch off golf ball sized lumps of dough with floured hands and flatten into a disc, wrap about 6-8 blueberries in the dough, pinching it together, forming a neat ball. Place in steamer (I placed mine on squares of wax paper- don't know if this is absolutely necessary).
7. Let rise again in low oven for about 20-30 minute.
8. Steam over boiling water for 8 minutes.
9. Spoon over some melted butter and cinnamon sugar-- enjoy!