Flank Steak with Roasted Garlic Sauce

Sliced flank steak drizzled with creamy roasted garlic sauce on a plate. Save
Sliced flank steak drizzled with creamy roasted garlic sauce on a plate. | cookingwithnadine.com

This impressive yet approachable dish features perfectly seared flank steak with a luscious roasted garlic cream sauce. The garlic bulbs are roasted until golden and sweet, then blended with broth, cream, butter, and Dijon mustard for a silky finish. The steak develops a beautiful crust from stovetop searing before finishing in the oven. Resting the meat ensures juicy, tender slices. The velvety sauce ties everything together, making this ideal for dinner parties or special family meals.

The first time I made roasted garlic sauce, I stood over the stove squeezing soft golden cloves from their papery skins, mesmerized by how something so simple could transform into liquid velvet. My kitchen smelled like an Italian bistro, and I knew this wasn't going to be just another weeknight dinner. That evening taught me that the right sauce can elevate even the humblest cut of meat into something restaurant-worthy.

I served this at my first dinner party in my new apartment, nervous about timing everything perfectly while my friends sat around the island with wine glasses. The moment I brought out that platter of sliced steak drizzled with golden sauce, the conversation stopped cold. They still ask me to make it whenever we have gatherings, and honestly, I love how something so impressive feels almost effortless once youve done it once.

Ingredients

  • Flank steak: This lean cut takes beautifully to high-heat cooking and slicing it thin across the grain makes every bite tender
  • Roasted garlic bulbs: Roasting transforms sharp raw garlic into something sweet, mellow, and spreadable
  • Beef or chicken broth: The foundation of your sauce, so grab something quality you would actually drink
  • Heavy cream: This is what gives the sauce that luxurious restaurant-style body and gloss
  • Dijon mustard: Just enough to cut through the richness and add a subtle sharpness
  • Fresh lemon juice: Brightens everything and balances the creamy elements perfectly

Instructions

Roast the garlic first:
Cut the tops off your garlic bulbs to expose all the cloves, drizzle with olive oil, and wrap them up tight in foil. Pop them in a 400°F oven for about 30 minutes until theyre soft and golden brown.
Prep and sear the steak:
Pat your flank steak completely dry, rub it with olive oil and season generously with salt and pepper. Sear it in a hot ovenproof skillet for 3 to 4 minutes per side until youve got a gorgeous crust.
Finish in the oven:
Transfer that same skillet right into the oven and roast for 6 to 8 minutes for medium-rare. Let it rest on a plate tented with foil for a full 10 minutes, because patience is what keeps it juicy.
Make the magic sauce:
Squeeze those soft roasted garlic cloves into a saucepan, add your broth, and bring it to a simmer while whisking. Stir in the cream, butter, Dijon, and lemon juice, then let it gently bubble for 2 to 3 minutes until it coats the back of a spoon.
Slice and serve:
Cut your steak thinly across the grain at a slight angle, arrange it on a platter, and spoon that velvety garlic sauce all over everything. Sprinkle with fresh parsley if you want it to look as good as it tastes.
A plate of flank steak with roasted garlic sauce, garnished with parsley. Save
A plate of flank steak with roasted garlic sauce, garnished with parsley. | cookingwithnadine.com

This recipe has become my go-to for celebrating small wins, whether its a promotion or just making it through a particularly long week. There is something deeply satisfying about serving something that looks so elegant and tastes so comforting. My husband actually requested this for his birthday dinner instead of going out, which I consider the ultimate compliment.

Getting That Perfect Sear

I learned the hard way that you need to let your skillet get properly hot before adding the meat. Do not be afraid of a little smoke, that is how you get that restaurant-quality crust that everyone will notice. Also, resist the urge to move the steak around once it hits the pan, let it develop that beautiful brown crust undisturbed.

Making It Ahead

You can roast the garlic up to two days in advance and keep it in the fridge. When you are ready to make the sauce, just squeeze the cloves out and proceed with the recipe. The sauce itself rewarms beautifully over low heat, so do not stress about timing everything perfectly.

Perfect Side Dishes

This steak pairs wonderfully with simple sides that do not compete with the rich garlic sauce. I usually serve it with roasted potatoes or a bright green salad to cut through the richness. Whatever you choose, keep it straightforward so the steak remains the star.

  • Creamy mashed potatoes soak up that extra sauce beautifully
  • Roasted asparagus with lemon adds a fresh crunch
  • A simple arugula salad with vinaigrette balances the richness
Juicy flank steak topped with velvety roasted garlic sauce served beside green beans. Save
Juicy flank steak topped with velvety roasted garlic sauce served beside green beans. | cookingwithnadine.com

This is the kind of meal that makes you feel like a chef in your own kitchen, without requiring hours of work or obscure ingredients.

Common Questions

Always slice flank steak thinly across the grain. This means cutting perpendicular to the long muscle fibers running through the meat. Slicing against the grain shortens these fibers, making each bite more tender and easier to chew.

Roasted garlic cloves should be soft, golden-brown, and easily squeezable from their skins. They will have a sweet, mellow flavor completely different from raw garlic. This typically takes about 30 minutes at 400°F wrapped in foil.

Yes, you can prepare the roasted garlic sauce up to 2 days in advance. Store it in an airtight container in the refrigerator and gently reheat on the stove, adding a splash of cream or broth if needed to reach the right consistency.

For medium-rare flank steak, aim for an internal temperature of 130-135°F. The temperature will rise about 5 degrees while resting. Use a meat thermometer inserted into the thickest part for accurate results.

Roasted potatoes, mashed potatoes, or creamy polenta complement the rich garlic sauce beautifully. Steamed green beans, roasted asparagus, or a crisp green salad provide fresh contrast to the hearty steak.

Skirt steak or sirloin make excellent alternatives. Both have good beefy flavor and benefit from similar cooking methods. Adjust cooking times slightly based on thickness, and always slice against the grain for tenderness.

Flank Steak with Roasted Garlic Sauce

Tender seared flank steak paired with rich, creamy roasted garlic sauce for an elegant main dish.

Prep 15m
Cook 35m
Total 50m
Servings 4
Difficulty Medium

Ingredients

Meat

  • 1 ½ lbs flank steak
  • 1 tbsp olive oil
  • 1 tsp kosher salt
  • ½ tsp freshly ground black pepper

Roasted Garlic Sauce

  • 2 whole garlic bulbs
  • 1 tbsp olive oil
  • 1 cup beef or chicken broth
  • ½ cup heavy cream
  • 2 tbsp unsalted butter
  • 1 tsp Dijon mustard
  • 1 tbsp fresh lemon juice
  • Salt and pepper to taste

Garnish

  • 2 tbsp chopped fresh parsley

Instructions

1
Prepare Oven: Preheat oven to 400°F.
2
Roast Garlic: Slice tops off garlic bulbs to expose cloves. Drizzle with 1 tbsp olive oil, wrap in foil, and roast for 30 minutes until soft and golden.
3
Season Steak: Pat flank steak dry. Rub with 1 tbsp olive oil, salt, and pepper.
4
Sear Steak: Heat large ovenproof skillet over medium-high heat. Sear steak for 3–4 minutes per side until well browned. Transfer skillet to oven and roast for 6–8 minutes for medium-rare.
5
Rest Meat: Remove steak from oven, transfer to plate, and tent loosely with foil. Let rest for 10 minutes.
6
Prepare Sauce Base: Squeeze roasted garlic cloves from bulbs into small saucepan. Add broth and bring to simmer over medium heat, whisking to break up garlic.
7
Finish Sauce: Add cream, butter, Dijon mustard, and lemon juice. Simmer gently for 2–3 minutes, whisking until smooth and slightly thickened. Season with salt and pepper to taste.
8
Serve: Slice flank steak thinly across the grain. Spoon roasted garlic sauce over steak. Garnish with fresh parsley if desired.
Additional Information

Equipment Needed

  • Sharp knife
  • Cutting board
  • Ovenproof skillet
  • Aluminum foil
  • Small saucepan
  • Whisk

Nutrition (Per Serving)

Calories 415
Protein 34g
Carbs 8g
Fat 28g

Allergy Information

  • Contains dairy (butter, cream)
  • Contains mustard
  • Gluten-free; always check broth label for hidden gluten
Nadine Carter

Sharing approachable recipes, kitchen hacks, and practical cooking tips for home cooks and food lovers.