Slice polenta (10 to 12 slices). Spray slices with cooking spray and brown in skillet, about 5 min per side. Turn off heat and set aside.
Make sauce: Chop the carrot and onion into small pieces. Mince the garlic. Spray saucepan with cooking spray then add olive oil and heat. add carrot and onion and saute until onion is translucent, about 5 minutes. And garlic and spices and saute one minute. add tomato sauce and 3/4 cup water. Rinse white beans and add. Simmer on low until thickened.
Serve: Dollop ricotta onto polenta slices. Place skillet under broiler to warm ricotta, about 2 minutes. Arrange polenta slices on plate and cover with sauce. Optional: Garnish with chopped fresh parsley, basil or oregano.