Fit pizza crust onto a lightly greased 13- x 10-inch baking sheet.
Bake at 350° for 10 minutes or until lightly browned.
Stir together 1 cup cheese, mayonnaise, and next 4 ingredients; spread mixture over pizza crust. Arrange sliced tomato over crust, and sprinkle with remaining 1/2 cup cheese.
Bake at 375° for 15 minutes. Cut into squares. Prep: 10 min., Bake: 25 min.
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