Combine the sugar, dry milk, and yeast in a large mixing bowl.
Add the warm water and mix well.
Cover with plastic wrap and let it sit for 5 minutes.
Add the salt and oil and stir to combine.
Mix in the flour and stir until the flour is absorbed and a dough is formed. -The dough will be very sticky, this is good, don't add more flour.
Use a stand mixer with a dough paddle attachment to stir for 10 minutes. You can also knead by hand on a flat surface.
Divide the dough into equal parts and roll into balls. (3 balls for 8-inch pans, 6 balls for 6-inch pans.) Place the balls of dough in a warm place, (*see notes), and let it rise for an hour and a half.
Preheat oven to 450 degrees.
Take the risen dough and use a rolling pin to roll them into 6 or 8-inch circles.
Use a paper towel to spread a bit of olive oil around the bottom and sides of the pizza pans, or sprinkle with a little bit of corn meal.
Place the rolled dough into the pizza pans. No need to create a crust with your fingers, just leave the dough perfectly flat on the bottom of the pan, the crust will rise in the oven.
Top the pizzas with pizza sauce, desired toppings, and shredded mozzarella cheese.
Bake for about 15 minutes, until the cheese is hot and bubbly and the crust is golden brown.
Brush the crusts with melted butter if desired and serve!