Preheat the oven to 400 degrees.2.
In a small-ish, oven-safe pan, melt your butter over medium heat. Add the garlic, mushrooms and thyme. Allow the mushrooms to soften for about 3 minutes.3.
Sprinkle the grated cheese evenly across the mushrooms. Now crack the eggs over all of it, side by side.4.
Slide that right into a hot oven. I baked mine for 10 minutes, which gave me firm whites and slightly runny yolks.5.
Bring it straight to the table (don't forget your trivet!) and serve with warm, buttered toast.