Gently clean the mushrooms with a damp cloth and remove the stems. Set the caps aside and finely chop the stems.
Make the Garlic Butter:
In a medium bowl, combine the softened Ór-Real Irish Butter, minced garlic, chopped parsley, grated Parmesan cheese, and breadcrumbs. Mix well until all ingredients are thoroughly incorporated.
Season the mixture with salt and pepper to taste.
Stuff the Mushrooms:
Arrange the mushroom caps on a baking sheet, stem-side up.
Fill each mushroom cap with a generous amount of the garlic butter mixture, pressing slightly to ensure it stays in place.
Bake the Mushrooms:
Drizzle a little olive oil over the stuffed mushrooms.
Bake in the preheated oven for about 20 minutes, or until the mushrooms are tender and the tops are golden brown.
Serve:
Remove the mushrooms from the oven and let them cool slightly before serving.
Arrange them on a serving platter and, if desired, garnish with a few lemon wedges for a fresh, tangy twist.