Oyster Mushroom Thyme Polenta

Creamy soft polenta enriched with milk and Parmesan, topped with golden garlic-sautéed oyster mushrooms, fresh thyme leaves and a drizzle of olive oil.

Ingredients

  • 150 g polenta (coarse cornmeal)
  • 600 ml water
  • 200 ml low-fat milk
  • 300 g oyster mushrooms
  • 2 cloves garlic
  • 1 tbsp olive oil
  • 4 sprigs fresh thyme
  • 40 g Parmesan (finely grated)
  • Salt and pepper to taste

Instructions

  1. Bring water and milk to a gentle boil in a medium saucepan with a pinch of salt.
  2. Slowly whisk in the polenta while stirring constantly to avoid lumps.
  3. Reduce heat to low and cook for 20-25 minutes, stirring frequently until soft and creamy.
  4. Stir 20 g of the Parmesan directly into the polenta and season with pepper.
  5. Tear oyster mushrooms into bite-sized pieces.
  6. Heat olive oil in a large skillet over medium-high heat.
  7. Add mushrooms in a single layer and sauté undisturbed for 3 minutes, then toss and cook 3 more minutes until golden.
  8. Mince the garlic, add to the mushrooms and cook for 1 minute until fragrant.
  9. Strip thyme leaves from stems and add most to the mushrooms, reserving some for garnish.
  10. Season mushrooms with salt and pepper.
  11. Divide polenta between two bowls and top with the sautéed mushrooms.
  12. Sprinkle with remaining Parmesan and fresh thyme leaves.

Notes

  • Stir the polenta frequently to prevent sticking to the bottom of the pan.
  • Use instant polenta for a quicker 5-minute version if short on time.
  • Do not overcrowd the skillet — mushrooms need space to brown rather than steam.
  • Leftover polenta firms up when cooled and can be sliced and pan-fried the next day.

Variations

  • Mushroom Mix: Combine oyster mushrooms with cremini or shiitake for deeper flavour.
  • Greens Addition: Toss a handful of baby spinach into the mushrooms in the last minute of cooking.
  • Egg Topped: Serve with a poached or soft-boiled egg for extra protein.
  • Herb Swap: Replace thyme with fresh rosemary or sage.
  • Truffle Twist: Finish with a few drops of truffle oil for a luxurious touch.

Why This Meal Is Good for You

Oyster mushrooms contain beta-glucans that support immune function and have shown promise in cancer prevention research. They are one of the few non-animal sources of Vitamin D, supporting bone health and mood regulation. Their niacin content supports healthy skin and cellular repair.

Polenta made from coarse cornmeal has a moderate glycaemic response compared to refined grains, especially when paired with protein and fat as in this dish. The combination slows glucose absorption and avoids blood sugar spikes.

Garlic provides allicin, a well-studied compound with anti-inflammatory and cardiovascular protective properties linked to improved cholesterol profiles.

Olive oil supplies monounsaturated fats and Vitamin E, supporting skin elasticity and reducing oxidative stress associated with ageing.

Fun Facts

  • Oyster mushrooms are one of the few carnivorous fungi — they can trap and digest tiny nematodes to supplement their nitrogen intake.
  • Polenta was once considered peasant food in Northern Italy, but is now served in Michelin-starred restaurants worldwide.
  • Thyme was used by ancient Egyptians in the embalming process and by Greeks as incense in temples, believing it gave courage to soldiers.
  • The word "Parmesan" is legally protected in Europe — only cheese made in specific regions of Italy following strict rules can carry the name Parmigiano-Reggiano.