Sausage Calzones

This has become a family favorite at our house.   (Adapted from the "Taste of Home" Cookbook)
I love any recipe that includes spinach and kids still like it!

Dough:   1 package active dry yeast
               1/2 C warm water
               3/4 C warm milk
               2 T plus 2 tsp olive oil
               1/2 tsp salt
               1 tsp sugar
               3 to 3 1/4 C flour

Filling:  1 package (10 oz) frozen, chopped spinach, thawed and squeezed dry
              3/4 to 1 lb ground italian sausage
             1/2 onion, chopped
             1 C cottage cheese
             1 C shredded mozzarella cheese
             1/2 C shredded parmesan cheese
             1 T minced fresh parsley (or dried)
             1/4 tsp pepper

In large bowl, dissolve yeast in warm water.  Add the milk and 2 T oil, salt, sugar, and 2 C flour.  Beat until smooth, then add remaining flour to form a soft dough.  Turn and knead on a floured surface 6-8 min until smooth and elastic.   Place in a greased bowl, turning once to grease the top.  Cover and let rise in a warm place until doubled, about an hour.
Meanwhile, cook the sausage with the onion until no longer pink, drain.   Add the spinach, cheeses, parsley, and pepper.  Mix well.
Preheat oven to 400 degrees.  Punch down dough and divide into 6 pieces.  On a floured surface, roll each piece into a 8-in circle.  Top  half of each with 2/3 C filling, then fold the other half over.  Fold edges over and pinch to seal.  Place on greased baking sheets sprinkled with cornmeal.  Brush tops lightly with remaining oil and sprinkle with garlic salt.   Bake for 20-25 min. or until golden brown.