Add 1 cup flour, yeast and salt to mixer bowl; whisk to combine. Add hot tap water (120-130ºF) and oil. Using a paddle attachment, mix for 4 minutes on low/med speed. Switch to dough hook, gradually add remaining flour and knead with 5 to 7 minutes until smooth and elastic. Place dough in lightly oiled bowl and turn to grease top. Cover; let rise until double in size.
Turn dough onto lightly floured surface; punch down to remove air bubbles. Divide dough into 12 pieces. Cover and let dough relax 10 minutes. On lightly floured surface, roll each piece into an 8-inch circle. Spoon pizza sauce, cheese and toppings onto half of each circle. Moisten edge of dough with egg wash. Fold in half; seal edge by pressing with fork. Prick each top; brush with egg wash.
Preheat oven to 375°F.
Bake on greased or parchment paper-lined cookie sheets in preheated 375ºF oven 30 to 35 minutes or until golden brown. Serve immediately.