In a medium bowl, combine water and next 3 ingredients. Whisk until blended. Set mixture aside.
In a large bowl, whisk together flour and next 3 ingredients.
Stir water mixture into flour mixture with a spoon until all ingredients are combined and a soft dough is created. Cover and let rise for 40 minutes, or refrigerate overnight.
Pre-heat oven to 350 degrees. Punch down dough and transfer dough to a clean and floured surface.
Roll out dough into a 17” X 12” rectangle. Sprinkle cheese and half of the crushed red pepper over dough to within an 1” of all edges. Rollup dough along the long side. Cut roll lengthwise, leaving the last 2” uncut. Carefully twist dough by bringing one side over the other until dough is one piece again.
Press ends together and carefully transfer twisted dough to a parchment lined baking sheet.
Brush top of dough with remaining beaten egg, then sprinkle remaining red pepper flakes and garlic salt over the top.
Bake for 25 minutes or until golden brown. Let bread cool for 20 min. Slice and serve with soft butter.