Preheat your oven to 400°F (200°C).
Clean the mushrooms with a damp paper towel and cut them into halves or quarters, depending on their size.
In an oven-safe skillet, melt the unsalted butter over medium heat.
Add minced garlic and sauté for about 1 minute until fragrant.
Add the mushrooms to the skillet and stir to coat them in the garlic butter. Cook for 5 minutes, letting them soften slightly.
Stir in the cannellini beans, fresh thyme, and parsley. Season with salt and black pepper to taste.
Transfer the skillet to the oven and roast for 12-15 minutes until the mushrooms are tender and slightly browned.
While the mushrooms are roasting, poach the egg separately in simmering water until the white is set but yolk remains runny.
Once ready, remove the skillet from the oven and plate a generous serving of the roasted mushroom and bean mixture.
Top with the poached egg and sprinkle nutritional yeast over the dish for an extra boost of flavor.
Serve immediately and enjoy your nutrient-packed, savory dish.