Step 1

Poach Mushrooms: Fill a deep, medium-sized saucepan with 4-5 cups of water. Add the smashed garlic, thyme sprigs and 1 bay leaf. Bring the water to a rapid simmer. Season water with ½ teaspoon salt. Add the mushroom caps and return to a gentle simmer. Cook, reducing heat as needed to maintain a gently simmer, until the mushrooms are just tender, about 3-5 minutes. Remove pan from heat and drain mushrooms well.

Step 2

Prepare Marinade while mushrooms are poaching: In a large, non-reactive (non-metallic) bowl, add the minced garlic, remaining bay leaf, shallot, oil, both vinegars, Italian seasoning, ¼ teaspoon salt, 1/8 teaspoon pepper, red pepper flakes, 1 teaspoon thyme leaves, and parsley. Whisk to thoroughly combine.

Step 3

Marinate in fridge: While the mushrooms are still warm, add them to the marinade (SEE NOTES). Gently stir to combine and coat. Taste the marinade and adjust for seasoning if desired. Cover the bowl tightly with plastic wrap. Transfer to the refrigerator and allow to marinate for at least 5 minutes (or up to 10 days), stirring the mushrooms occasionally. For the best taste, I recommend allowing the mushrooms to marinate for at least 8 hours.

Step 4

Serve: Remove mushrooms from refrigerator. Taste again and adjust for seasoning if needed. Bring mushrooms to room temperature before serving. Garnish with more chopped parsley. Serve and enjoy!