A Cozy Night In: Filet Mignon with Potatoes and Onions
There’s something quietly magical about the scent of filet mignon with potatoes and onions drifting through the house on a cool evening. I still remember the first time I made this dish for my husband after moving into our tiny apartment—our plates balanced on the edge of our old coffee table, laughter echoing between clinking wine glasses while the city buzzed outside. Something about that juicy steak, the crispy potatoes, and those sweet, golden onions just made everything feel special—even if our “dining room” was also our living room.
This filet mignon with potatoes and onions recipe isn’t just another weeknight meal. For me, it’s a little celebration. Whether it’s a date night, a family gathering, or just a treat for yourself, there’s an effortless elegance to this classic combination that never fails to impress (and, honestly, it’s much easier than it looks!).
Why You’ll Adore This Filet Mignon with Potatoes and Onions
I could go on for days about why this steak-and-potatoes dinner wins my heart, but here are a few reasons you’ll probably love it (at least as much as I do):
- Unbeatable Flavor: The filet mignon is melt-in-your-mouth tender, and roasting brings out the earthy sweetness of both potatoes and onions. That little sprinkle of fresh herbs at the end? Chef’s kiss.
- Simple, Reliable Ingredients: If you’ve got a steak, a couple of potatoes, an onion, and some pantry staples, you’re well on your way. No fancy shopping required.
- Restaurant-Worthy (Without Leaving Home): Serving filet mignon feels like a splurge, but I promise, with this recipe, you’ll turn everyday ingredients into something truly special right at your own kitchen table.
- Easy to Make Your Own: Roasted potatoes and onions make the perfect blank canvas. Want to toss in garlic? Craving a smoky seasoning? Go for it.
Ingredients You’ll Need for Filet Mignon with Potatoes and Onions
Let’s keep it real—delicious food starts with quality ingredients. Here’s what you’ll need (and a few of my kitchen secrets):
- Filet Mignon Steak: Choose steaks that are at least 1.5 inches thick for the best, juicy result. Try to pick ones with even marbling for more flavor.
- Potatoes: I love Yukon Golds or red potatoes. They roast up golden with creamy, tender centers.
- Onions: Yellow or sweet onions are great—they caramelize beautifully alongside the potatoes.
- Olive Oil: Use a good one! It brings out the best in both the steak and roast veggies.
- Salt + Pepper: Kosher salt and freshly cracked black pepper, always (a little goes a long way).
- Fresh Herbs (Optional): Rosemary, thyme, or parsley all shine here. They add a fresh, heady perfume to the roasted dishes (I snip mine fresh from a windowsill pot).
Feel free to toss in a basic side salad for color and freshness, too! (I usually grab arugula or spinach, olive oil, lemon, and call it a day.)
Step-by-Step Guide: Making the Perfect Filet Mignon with Potatoes and Onions
Promise me you won’t overthink this! Here’s exactly how I make filet mignon with potatoes and onions (trust me, you’ve got this):
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Preheat Your Oven
Set your oven to 400°F (200°C). Hot ovens make those potatoes crispy and steaks juicy. -
Season and Sear
Generously season the filet mignon steaks with salt and pepper (don’t be shy). Heat olive oil in an oven-safe skillet over medium-high. Sear the steak for 3–4 minutes per side, until deeply browned (it’ll smell incredible). -
Roast to Perfection
Move the skillet to your preheated oven. Let the filets roast for 10–15 minutes, depending on how “done” you prefer it. For me, about 12 minutes for medium-rare is the sweet spot. -
Prep Potatoes & Onions
While steak roasts, peel and cut potatoes into wedges. Slice the onions thin. Toss both with olive oil, salt, and pepper—use your hands so everything gets evenly coated. -
Roast the Veggies
Spread potatoes and onions out on a sheet pan. Pop them into the oven (or cook them alongside the skillet if there’s room) for 25–30 minutes. Roast until potatoes are golden and onions just start to crisp. -
Rest & Serve
Pull the steak out and let it rest at least 5 minutes (this matters! It keeps the juices in the filet mignon). Plate everything together, scatter with fresh herbs, and add a bright, simple side salad if you’d like.
Let everyone see the beautiful sizzling skillet at the table—it’s meant to impress!
My Secret Tips and Tricks for Filet Mignon with Potatoes and Onions Success
- Pat Your Steaks Dry: Before seasoning, pat filet mignon with paper towels. A dry surface ensures a perfect, flavorful crust.
- Roast on Convection if Possible: If your oven has a convection setting, use it for the potatoes and onions. It gives extra crispiness!
- Let the Steak Rest: Seriously, those five minutes are magic (the steak will finish cooking gently, and the juices won’t run everywhere when you slice).
- Don’t Crowd the Pan: When roasting potatoes and onions, a little space helps everything brown, not steam.
- Try Infused Olive Oil: Sometimes, I drizzle a little garlic or chili-infused olive oil before roasting for an extra layer of flavor.
And one last thing—use a meat thermometer if you’re nervous about doneness. Medium-rare? Pull it at about 130°F and let it rest (filet mignon always tastes best tender, not overcooked!).
Creative Variations and Ingredient Swaps
Want to shake things up or work with what you’ve got? Here are my favorite swaps and upgrades for filet mignon with potatoes and onions:
- Different Steak Cuts: Swap filet mignon for sirloin, ribeye, or even a thick pork chop (great if you’re watching your budget).
- Add Garlic or Shallots: Toss a few smashed garlic cloves or sliced shallots onto the roasting sheet for extra depth.
- Use Sweet Potatoes: For a sweeter, earthier dish, use sweet potatoes instead of regular ones—roast as usual.
- Play with Herbs & Spices: Try smoked paprika, herbes de Provence, or even a sprinkle of cumin for a global twist.
- Vegan Variation: Substitute steak for thick slices of portobello mushroom brushed with olive oil and herbs—roast alongside potatoes and onions for a hearty, plant-based meal.
The beauty of roasted potatoes and onions is that they go with just about anything (and taste amazing with so many flavor profiles).
How to Serve and Store Your Filet Mignon with Potatoes and Onions
Serving this filet mignon dinner couldn’t be easier or more show-stopping. I love to plate the steak atop a bed of golden roasted potatoes and onions, add a sprinkle of herbs, and serve with a simple green salad (looks like a restaurant, feels like home).
- Finishing Touches: Try a pat of garlic butter on the hot steak, or a drizzle of good-quality balsamic glaze over the platter.
- Wine Pairing: A robust red (Cabernet or Malbec) is my go-to.
Storing Leftovers:
- Pop any extra filet mignon, potatoes, and onions into airtight containers.
- Store in the fridge up to 3 days.
- Reheat gently—steak is best warmed in a low oven, potatoes and onions re-crisp in a skillet with a splash of olive oil.
(Leftover roasted potatoes and onions are also amazing chopped into a breakfast hash with eggs!)
FAQs: Your Top Questions About Filet Mignon with Potatoes and Onions Answered
1. What’s the best way to know when filet mignon is done?
I swear by a meat thermometer for filet mignon. For medium-rare, pull your steak at 130°F, rest, then slice. Too nervous? Give it a gentle press—the steak should still give slightly but not feel mushy.
2. Can I prep any parts of this meal in advance?
Absolutely. You can cut potatoes and onions earlier in the day (just keep in cold water in the fridge to prevent browning). Let your steaks rest at room temp 30 minutes before cooking for more even results.
3. What herbs work best with filet mignon?
Rosemary, thyme, and parsley are classic, but basil, tarragon, or chives are great for a lighter, summer twist.
4. How should I store leftovers?
Keep everything in airtight containers in the fridge. Separate the steak and veggies for the best texture when reheating.
5. Can I grill the filet mignon instead of roasting?
Totally! Sear it on a hot grill for 3–4 minutes per side, then finish over indirect heat until your desired doneness.
So next time you want a cozy, delicious, and downright impressive dinner, give this filet mignon with potatoes and onions a try. Gather the ones you love, pour a glass of something delicious, and settle in for a meal that’s as much about connection as it is about incredible
