Clean the mushrooms with a damp paper towel and trim the stems if needed
Slice the mushrooms evenly
Heat a skillet over medium-high heat
Add butter or oil to the skillet
Add the mushrooms in a single layer
Cook without stirring for 2 to 3 minutes
Stir and continue cooking until the mushrooms release their moisture
Cook until the moisture evaporates and the mushrooms turn golden brown
Add minced garlic, salt, and black pepper
Stir and cook for 30 to 60 seconds
Add fresh herbs if desired
Remove from heat and serve immediately