Make Ahead
Prepare polenta and sauce as directed. Refrigerate up to 24 hours. Reheat the sauce just before serving. Meanwhile, slice and cook polenta as directed.
Variation
Substitute your favorite KRAFT Shredded Cheese for the mozzarella and/or KRAFT Grated Romano Cheese for the Parmesan.
Substitute
Substitute coarse corn meal or dry polenta for the corn grits.