Your Oyster Recipe of the Day: Oysters and Grits with Roasted Tomatoes. You might give up shrimp and grits for chef Ashley Christensen’s incredible oyster and grits combo. Christensen builds an umami-loaded sauté with oyster mushrooms, garlic, shallots, oysters, heavy cream and slow-roasted tomatoes, then serves it over creamy stone-ground grits.