Prepare pizza crust according to package directions.
Divide dough into 2 portions. On lightly floured work surface, roll out each portion into 12-inch (30 cm) round.
Make 12 cuts around edge of dough, about 2 inches (5 cm) deep. Fold corners of 2 sections together to touch; repeat to form a 6-point star.
Transfer each pizza to greased pizza pan. Leaving 1/2-inch (1 cm) border all around, spread pizza sauce over each crust in circular motion, leaving star tips as crust. Sprinkle with mozzarella and Cheddar. Top with broccoli.
Bake according to package directions. Let cool for 5 minutes before serving.