In a large bowl, mix 2 cups of flour, sugar, salt, and yeast. Add warm milk, butter, egg. Beat w/ electric mixer on low speed for 1 minute, scraping bowl frequently. Stir in remaining flour (or as much as you need to make the dough easy to handle.).
Place on a lightly floured surface and knead for about 5 minutes or until dough is smooth and springy. Grease mixing bowl with pam spray. Wrap and refrigerate overnight.
Mix brown sugar and cinnamon, place in ziplock bag.
Gently push fists into dough to deflate. Flatten dough with hands or rolling pin into 15/10 rectangle on lightly floured surface. Spread w/ 2 tbsp melted butter, sprinkle w/ filling.
roll up rectangle tightly, beginning at the 15 inches side. Pinch edges to seal. Stretch and shape until even, cut into 15 1 inch slices and place on a cookie sheet.
Preheat oven to 350Ëš F, bake for 30-35 minute or until golden brown.