Step-by-step instructions
Preheat your oven to 400°F (200°C).
Season the steaks generously with salt and black pepper. In a skillet over medium-high heat, melt 2 tablespoons of butter.
Sear the filet mignon for 3-4 minutes on each side until you achieve a beautiful brown crust. Once seared, add minced garlic to infuse that irresistible flavor.
Transfer the skillet to your preheated oven and cook for an additional 5-7 minutes, depending on your preference for doneness.
Meanwhile, boil the cubed potatoes in a separate pot until they are fork-tender. Drain the potatoes, then return them to the pot.
Mash the potatoes with the remaining butter, heavy cream, and truffle oil. Season with salt to taste.
Plate the filet mignon alongside a generous scoop of truffle mashed potatoes, and garnish with fresh parsley for that vibrant finish.
Best ways to enjoy it
Serving Garlic Butter Filet Mignon & Truffle Mashed Potatoes can be an art. Consider placing the steak atop the mashed potatoes for a dramatic presentation. A drizzle of extra truffle oil around the plate adds sophistication, and a side of steamed asparagus or sautéed green beans can provide a beautiful color contrast and freshness.
Storage and reheating tips
To maintain the quality of your leftovers, store any uneaten portions in an airtight container in the fridge for up to 3 days. Reheat gently in the oven or on a stovetop over low heat to prevent drying out. If you want to keep the leftovers for longer, consider freezing the mashed potatoes separately from the steak, as they freeze well for up to 3 months. Just make sure to label them!
Helpful cooking tips
Room temperature steaks: Before cooking, let your filet mignon sit at room temperature for about 30 minutes; this helps them cook evenly.
Don’t overcrowd the skillet: When searing, give the steaks enough space so they brown beautifully rather than steam.
Taste as you go: Season accordingly, especially in the mashed potatoes; just a pinch of salt can make a world of difference!
Creative twists
Feel free to experiment! Add textures with crispy shallots on top of the mashed potatoes or infuse different flavors by replacing garlic with minced shallots for a milder taste. Vegetarian alternatives may include portobello mushrooms instead of filet mignon, maintaining that earthy richness from the truffle oil.
FAQs
What’s the ideal cooking temperature for filet mignon?
For a medium-rare finish, aim for an internal temperature of 130-135°F (54-57°C).
Can I use other oils instead of truffle oil?
Yes, the richness of olive oil or even flavored oils like garlic or herb-infused oils can be delightful alternatives.
How do I know when the potatoes are done boiling?
You’ll know the potatoes are ready when they can be easily pierced with a fork—this usually takes about 15-20 minutes of boiling.
This dish combines elegance and indulgence, ideal for any meal that needs that extra sparkle. Enjoy your culinary adventure with Garlic Butter Filet Mignon & Truffle Mashed Potatoes, and watch as it transforms any gathering into a memorable dining experience!

