Garlic Butter Mushroom Creamy Parmesan Polenta Skillet Step-by-step instructions

Before you start

Measure every ingredient into small prep bowls, pat proteins or vegetables dry with paper towels, and preheat your pan thoroughly before adding oil so browning starts cleanly without steaming.

Take your time with each step, and the result will be worth every minute spent in the kitchen.

Instructions

Prep and Aromatics

1. 1Slice the mushrooms
   Trim the bottoms of the cremini mushrooms and slice them about 1/4 inch thick on a wooden board. Peel the garlic cloves and smash each one lightly with the flat side of the knife. Pick the thyme leaves from the sprigs and set them aside with the garlic.
   Look for Mushroom slices are even and the garlic is flattened, with the thyme ready nearby.
   Tip Slice evenly so the mushrooms brown at the same rate in the skillet.
2. 2Grate the parmesan
   Grate the aged parmesan on a fine box grater until you have a fluffy mound of cheese. Divide it, setting aside about 1/2 cup for finishing the polenta and keeping the rest for the polenta base.
   Look for The cheese falls in light, fluffy strands rather than clumps.
   Tip Grate the cheese just before using it so it melts smoothly.

Every ingredient is evenly coated, fragrant and progressing at a steady gentle sizzle without sticking to the pan surface.

Take a moment to check the color, texture and aroma before moving on to the next stage.

Main Cooking Stage

3. 3Brown the garlic butter mushrooms
   Melt the butter in the cast iron skillet over medium-high heat. Add the sliced mushrooms, garlic and thyme, and toss well. Cook without stirring for a few minutes, then stir and continue cooking until the mushrooms are golden brown and their moisture has evaporated.
   Look for The mushrooms are deep golden and the pan is dry with no liquid left.
   Tip Let the mushrooms sit undisturbed briefly so they develop color.
4. 4Cook the polenta slowly
   Bring the water or stock to a boil in a medium saucepan with a pinch of salt. Whisk in the polenta slowly, reduce the heat to low, and cook, stirring often, for about 30 minutes until thick and smooth. Stir in the parmesan you set aside for the polenta base.
   Look for The polenta is thick, smooth, and pulls away from the sides of the pan.
   Tip Stir often at a gentle simmer to prevent lumps and scorching.
5. 5Spread the polenta in the skillet
   Scrape the creamy polenta into the skillet, spreading it evenly around the mushrooms or clearing a space for them. Season with salt and black pepper and finish with the remaining grated parmesan so the cheese melts into the polenta.
   Look for The polenta is smooth and the cheese has melted into it.
   Tip Keep the polenta warm so it spreads easily.

Every ingredient is evenly coated, fragrant and progressing at a steady gentle sizzle without sticking to the pan surface.

Take a moment to check the color, texture and aroma before moving on to the next stage.

Final Glaze and Plating

6. 6Arrange and brown the edges
   Arrange the golden mushrooms over the polenta. Let the skillet sit over low heat until the polenta browns lightly at the edges, about 5 minutes, without stirring.
   Look for The polenta edges are lightly golden and set against the skillet.
   Tip Watch the edges closely so they brown without burning.
7. 7Serve from the skillet
   Rest the skillet for a few minutes, then scatter the remaining thyme leaves over the top. Serve straight from the skillet with forks, scooping the golden mushrooms and melted cheese over the creamy polenta.
   Look for The cheese is melted and the mushrooms glisten over the polenta.
   Tip Serve from the skillet so the polenta stays warm.

Every ingredient is evenly coated, fragrant and progressing at a steady gentle sizzle without sticking to the pan surface.

Take a moment to check the color, texture and aroma before moving on to the next stage.

Common mistakes

Avoid crowding the pan or flipping too early before a crust forms, keep the burner at steady medium-high heat so aromatics never scorch, and season in balanced layers rather than only at the end.

How to tell it’s done

The dish is ready when the exterior shows even golden color, the center feels tender when pressed gently with a fork, and the sauce coats the back of a spoon glossy and fragrant.