Remove polenta from the packaging and slice into rounds about 1/2" thick. Brush lightly with oil and sprinkle with salt and pepper.
Preheat the grill to high heat.
Place polenta slices on the grates and grill for 8 minutes per side.
While polenta is grilling, make your tomato topping! Combine tomatoes, basil, olive oil, balsamic, sea salt, and pepper in a small bowl. Mix together and set aside to marinate.
Remove polenta slices from the grill and spoon bruschetta topping over top. If desired, garnish with another dose of fresh basil.