Chimichurri Steak Sandwich with Caramelized Onions

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Open-Faced Chimichurri Steak Sandwich with Caramelized Onions
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Open-Faced Chimichuri Steak Sandwich

This open-faced beef sandwich is easy to make and a burst of flavor thanks to the herb freshness and sweet and sour caramelized onions. A must-try!
Prep Time10 minutes
Cook Time15 minutes
Resting Time5 minutes
Total Time30 minutes
Course: Main Course
Cuisine: American
Keyword: chimichurri, steak, Sweet and Sour Caramelized Onions, sweet potatoes fries
Servings: 4
Calories: 555kcal

Equipment

  • skillet
  • foil
  • 2 small bowls
  • 1 medium bowl

Ingredients

  • 1 tsp spice blend your choice
  • 2 tbsp breadcrumb
  • 400 g sweet potato 1 medium-size
  • 1 piced focaccia sandwich bun
  • 125 g sliced onions
  • 2 tsp chopped garlic
  • 1 tbsp red wine vinegar
  • 30 g Spring mix salad
  • 10 g cilantro leaves chopped
  • 10 g parsley chopped
  • 1/4 cup mayonnaise
  • salt and pepper to taste
  • olive oil extra virgin
  • 400 g AAA beef striloin
  • 1 tbsp butter

Instructions

Prepare Sweet Potato

  • Heat oven to 425°F.º
    Wash sweet potato and cut into 1/2 inch thick fries.
    Line a baking sheet with foil.
    Toss sweet potato in a medium bowl with 1 tbsp. olive oil, spice blend, and breadcrumbs.
    Season to taste with salt and pepper.
    Place into the oven for 15–20 minutes, until tender and edges are browned.

Cook Striploin

  • Drain steak and pat dry with a paper towel.
    Cut steak in half widthwise like a bun, creating two thinner steaks.
    Season both steaks to taste with salt and pepper.º Wash hands, knife and cutting board with warm soapy water.
    Heat a skillet over medium-high and add1 tbsp. butter and half of the garlic.
    Place steaks fat-side down in the skillet and cook for 3–4 minutes per side, until browned on both sides and steak reaches an internal temperature of 135°F.

Cook the Onion

  • Remove steak from skillet and let rest for 5 minutes to an internal temperature of 145°F.
    Add onion to skillet and cook for4–6 minutes on medium heat until soft and browned.

Prepare the Focaccia

  • Cut focaccia in half.
    Brush 1 tbsp. olive oil on the insides of the focaccia.
    Place focaccia in the oven on the middlerack, insides facing up.
    Bake for 4–6 minutes or until edges are golden brown.

Prepare the Chimmichuri & Herb Mayo

  • Wash and dry cilantro and parsley.
    Pick and finely chop cilantro and parsley leaves.
    In a small mixing bowl, combine 1 tbsp. olive oil, cilantro, parsley, remaining garlic,and red wine vinegar to taste.
    Season to taste with salt and pepper.
    In a second small bowl, add 1 tbsp. of the chimichuri with half of the mayonnaise and mix well.

Assemble & Serve

  • Slice steak diagonally against the grain,into 1/2 inch thick slices.
    Spread remaining mayonnaise onto theinsides of foccacia.
    Add onion, spring mix, and steak onto thebottom half of foccacia.
    Spoon remaining chimmichuri on top ofsteak slices.
    Divide sweet potato fries onto servingplates with a dollop of herb mayo.
    Enjoy!

Video

Tips for Making the Best Open-Faced Chimichurri Steak Sandwich with Caramelized Onions

  1. Select Quality Steak: Choose a high-quality cut, like flank or sirloin. This will enhance the flavor and tenderness of your sandwich.
  2. Bring to Room Temperature: Allow the steak to sit at room temperature for about 30 minutes. This ensures even cooking.
  3. Season Generously: Use salt and pepper to season the steak. This step enhances the natural flavors.
  4. Sear for Flavor: Cook the steak over high heat. This creates a browned crust, which locks in moisture and flavor.
  5. Prepare Chimichurri Sauce: Blend fresh herbs such as parsley and cilantro with garlic, red wine vinegar, and olive oil. This vibrant sauce adds a fresh kick.
  6. Caramelize Onions Slowly: Cook onions over medium heat, stirring frequently. This brings out their sweetness without burning.
  7. Assemble with Care: Layer the cooked steak on crusty bread. Then, drizzle with chimichurri and top with caramelized onions for a delicious finish.

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