Dinner · Part 1 of 3: Ingredients
Creamy Polenta with Garlic Butter Mushrooms and Melted Cheese

- Prep
- Cook
- Total
- Serves
- 4
Soft, golden polenta, garlic butter mushrooms and a pile of melting aged cheese make a dinner that feels generous without much effort. Everything comes together in one cast-iron skillet, with fresh thyme adding a green, earthy finish. It is a simple dish that rewards patience at the stove and turns humble pantry staples into something special.
This creamy polenta with garlic butter mushrooms is a warm, savory dinner built around two contrasts: a smooth, golden base and a skillet of mushrooms browned until their edges turn crisp and caramelized. The polenta is cooked slowly in water and milk until it is thick and tender, then finished with butter and grated aged cheese so it tastes rich without any heavy sauce.
The mushrooms are seared in garlic butter with shallots and thyme, so they bring deep, savory flavor to every spoonful. When the two are served together, the cheese melts into the warm polenta and the mushrooms add texture against the silky base. Plan about an hour from start to finish, most of it spent gently stirring the polenta while the mushrooms brown.
Ingredients
- 1 cup coarse polenta
Polenta
- 4 cups water
- 1 cup whole milk
- 1 tsp kosher salt, plus more to taste
- 2 tbsp unsalted butter
Mushrooms
- 1 lb whole cremini mushrooms, trimmed and scored in a crosshatch pattern
- 2 shallots, peeled and sliced
- 3 tbsp unsalted butter
- 3 cloves garlic, minced
- 6 sprigs fresh thyme, plus leaves for serving
- freshly ground black pepper to taste
- 1 cup finely grated aged hard Italian cheese, such as Parmigiano-Reggiano, plus more for serving
Why this recipe works
Polenta is made from coarse cornmeal, which needs a long, gentle simmer to absorb the liquid and soften fully. Cooking it over low heat with frequent stirring keeps the texture smooth instead of gritty, and the starch thickens the mixture into a creamy base that holds its shape on the plate.
Adding the butter and cheese off the heat helps them emulsify into the polenta, so the dish stays glossy rather than separating into oily pools.
Mushrooms release water when they first hit a hot pan, and that liquid must evaporate before they can brown. Cooking them in a single layer in a black cast-iron skillet gives them direct, even contact with the metal, which builds a deep golden crust.
Adding the garlic only near the end keeps it from scorching, so the butter tastes sweet and aromatic instead of bitter. Scoring the caps in a crosshatch pattern adds more surface for browning and lets the garlic butter soak into the mushrooms.
Notes and substitutions
Coarse polenta gives the most texture and a pleasant, toothsome bite. Quick-cooking polenta works in a pinch, but it turns out softer and a little less distinctive, so follow the package timing and check the texture early. Use whole milk or half-and-half for the richest result; water alone makes a leaner polenta that tastes more of corn.
Cremini mushrooms have firm flesh and a deep, earthy flavor that browns beautifully, which is why they are the best choice here. Baby bella or button mushrooms work well too.
Choose a heavy black cast-iron skillet if you have one, because it holds heat evenly and gives the mushrooms a dark, crisp sear. A sharp chef's knife and a sturdy wooden board make the scoring and slicing easy and safe.
- Cremini mushrooms: Baby bella or button mushrooms, cut the same way and cooked until browned
- Aged hard Italian cheese: Pecorino Romano, which is saltier, so reduce the salt in the polenta
- Whole milk: Half-and-half for a richer, silkier polenta
Equipment
- Black cast-iron skillet
- Chef's knife
- Wooden cutting board
- Box grater
- Medium saucepan with a whisk
- Two forks
Up next · Part 2 of 3
6 steps · 35 min of cooking · what to look for at each stage
Step-by-step instructions (Part 2)