Preheat oven to 450 degrees. Line 2 baking sheets with parchment paper or silicone baking mats.

Remove the plastic casing from the polenta and cut into ¼-inch thick slices. Pat dry with a paper towel and place on the baking sheets. Bake for 10-12 minutes or until lightly golden brown, flip and bake for another 10-12 minutes or until browned. Remove from oven. Let cool.

In a mixing bowl, combine the rest of the ingredients and mix well. Spoon the mixture on top of the polenta rounds.

Preheat the broiler to high and position the top rack of the oven about 8 inches from the broiler element. Broil for 2-3 minutes or until the shrimp mixture starts to brown.