Wash hands thoroughly, lathering with soap and rinsing with running water before starting prep.
Preheat oven to 350℉.
In a 1.5-quart casserole dish or pot, whisk together polenta, water, and ¼ teaspoon each of salt and pepper.
1 cup coarse polenta, 4½ cups water
Cover the polenta pot and place in the preheated oven for 40 minutes.
While the polenta cooks, wash and slice the mushrooms, chop the garlic, and wash the tomatoes.
Heat olive oil in a large, deep skillet, and add the sliced mushrooms. Cook on medium high until they are soft and releasing water. This will take about 10 minutes.
2 Tablespoons olive oil, 16 ounces mushrooms
Toss in the chopped garlic and stir for 30 to 60 seconds, until fragrant. Add tomato paste, and remaining salt and pepper. Stir well. lowering the heat if necessary to prevent burning.
2 Tablespoons tomato paste, 2 teaspoons garlic
Deglaze pan with wine or water (or a combination) and add the halved cherry tomatoes. Bring to a boil and then lower heat to medium. Simmer for 10 to 15 minutes, stirring frequently, to soften tomatoes until they are nearly falling apart. Note: You will need to add 2 to 4 Tablespoons of water periodically to prevent the mixture from getting too thick and dry.At the end of cooking, taste the mixture and add a pinch of salt, if needed.Cut the heat, and stir in the chopped parsley. 12 ounces cherry tomatoes, ¼ cup Flat-leaf parsley
Meanwhile remove polenta from the oven at the end of the cook time and whisk in grated Parmesan and butter. Let stand, covered, for at least 5 minutes.
¼ cup Parmesan cheese, 2 Tablespoons butter
Scoop the creamy polenta into a pasta bowl and top with mushroom-tomato sauce. Serve drizzled with extra virgin olive oil and pass grated Parmesan at the table.