Cheeseburger in Pizzadise

Preheat oven to 425 degrees F. Combine 1 cup flour, undissolved yeast, sugar and salt in a large bowl. Add very warm water and oil; mix until well blended, about 1 minute. Gradually add enough remaining flour to make a soft dough. Dough should form a ball and will be slightly sticky. Knead** on a floured surface, adding additional flour if necessary, until smooth and elastic, about 4 minutes. Pat dough with floured hands to fill greased pizza pan or baking sheet. OR roll dough on a floured counter to 12-inch circle; place in greased pizza pan or baking sheet. Form a rim by pinching the edge of the dough. Combine pizza sauce, ketchup and mustard; spread over crust. Sprinkle with onions and ground beef. Season to taste with black pepper. Evenly sprinkle cheese over pizza; top with dill pickle slices. Bake on lowest oven rack for 12 to 15 minutes, until cheese is bubbly and crust is browned.