Slice off the bottom stem of each group of oyster mushrooms, which separates them into individual mushrooms.
Heat the olive oil in a large non-stick or cast iron skillet. Add the mushrooms and smashed garlic clove and sauté for 2 to 3 minutes until golden and tender. Stir in the herbs and lemon juice in the last 30 seconds. Turn off the heat, remove the garlic clove and serve.