1 Porterhouse steak, about 24 oz (680 g) 1 / 2 cup (115 g) unsalted butter, softened 4 cloves garlic, minced 2 tbsp (30 ml) fresh parsley, chopped 1 tbsp (15 ml) olive oil 2 Vidalia onions, sliced into rings 6 oz / 170 g shiitake mushrooms, cleaned and sliced Salt and pepper, to taste
1. **Make the Garlic Herb Butter**: In a small bowl, combine the softened butter, minced garlic, and chopped parsley. Mix well and set aside. 2. **Caramelize Onions**: Heat a tablespoon of olive oil in a large skillet over medium-low heat. Add the Vidalia onion slices and a pinch of salt. Cook until the onions are golden and caramelized, stirring occasionally, about 15-20 minutes. Remove from the skillet and set aside. 3. **Cook Shiitake Mushrooms**: In the same skillet, add the shiitake mushrooms. Sauté until tender and slightly browned, about 5-7 minutes. Season with salt and pepper, then remove and set aside with the onions. 4. **Cook the Steak**: Heat the same skillet over medium-high heat. Pat the steak dry and season generously with salt and pepper. Place the steak in the hot skillet and sear for 4-5 minutes per side for medium-rare, adjusting the time according to your preference. During the last minute of cooking, add a spoonful of the garlic herb butter to the skillet and baste the steak. 5. **Rest and Serve**: Once cooked to your liking, remove the steak from the skillet and let it rest for 5-10 minutes. Top with more garlic herb butter, if desired. Serve the steak alongside the caramelized Vidalia onions and sautéed shiitake mushrooms for a complete dish bursting with flavor.
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