Cast-Iron Flank Steak with Chimichurri and Grilled Summer Squash🍖 Main
A quick-seared flank steak sliced thin and topped with a bright herbaceous chimichurri, served with thick-cut summer squash.
By Sarah Chen, Home Cook Enthusiast
Shared by the Home Cook Assistant community ยท Reviewed for clarity
There is a quiet confidence to a dish like cast-iron flank steak with chimichurri and grilled summer squash that comes from knowing every element has a purpose. This is not just another variation on a familiar idea. It is a well balanced plate where 1 cup fresh parsley, finely chopped, 1/4 cup fresh cilantro, finely chopped come together in a way that feels both comforting and intentional, the kind of meal that makes a regular weeknight feel a little more cared for. Whether you are cooking for family, hosting friends, or simply treating yourself to something made with attention, this recipe rewards you with layers of flavor that belie how approachable it really is.
You will want to pay attention to two small details that make a big difference here. First, Pat your protein completely dry before searing and do not move it for the first few minutes. That undisturbed contact is what builds a deep golden crust, and that crust is where most of the flavor lives. Second, Season in layers rather than all at once. A pinch when you add the aromatics, another when the main ingredients go in, and a final adjustment at the end builds depth that one big addition at the start cannot match. These are not fussy chef tricks. They are the practical habits that separate a good version of this dish from a great one, and once you do them a few times they become second nature.
Pair it with a simple side that soaks up the extra sauce. Crusty bread, fluffy rice, or buttered noodles all work, and a crisp green salad on the side keeps the plate balanced without adding work. If this is your first time with cast-iron flank steak with chimichurri and grilled summer squash, a quick-seared flank steak sliced thin and topped with a bright herbaceous chimichurri, served with thick-cut summer squ that the process is forgiving and the results are consistently satisfying. It is the kind of recipe that earns a permanent spot in your rotation, not because it is complicated, but because it is reliably delicious and adaptable to what you have on hand.
Ingredients
For the Chimichurri
- 1 cup fresh parsley, finely chopped
- 1/4 cup fresh cilantro, finely chopped
- 3 cloves garlic, minced
- 1/2 cup extra virgin olive oil
- 2 tbsp red wine vinegar
- 1 tsp crushed red pepper flakes
- Salt and coarse black pepper
For the Steak
- 1 1/2 lbs flank steak
- Salt and coarse black pepper
For the Grilled Squash
- 2 medium zucchini, thickly sliced
- 2 medium yellow squash, thickly sliced
- 1 tbsp extra virgin olive oil
- Salt and coarse black pepper
Nutrition (Per 4 servings)*
* AI-estimated values only โ not a substitute for professional nutrition labeling.
Instructions
Prepare the Chimichurri
- Step 1: Make the chimichurri by combining the parsley, cilantro, garlic, 1/2 cup olive oil, red wine vinegar, red pepper flakes, salt, and pepper in a small bowl. Stir well and set aside to let the flavors meld.
Cook the Steak
- Step 2: Season the flank steak generously on both sides with salt and coarse black pepper.
- Step 3: Heat a large cast-iron skillet over high heat until smoking. Sear the steak for 4 to 5 minutes per side for medium-rare. Remove from the skillet and let it rest on a cutting board for 10 minutes.
Prepare the Grilled Squash
- Step 4: While the steak rests, toss the sliced zucchini and yellow squash with 1 tbsp of olive oil, salt, and pepper. Roast or grill the squash slices until tender with a slight char, about 3-4 minutes per side.
Serve
- Step 5: Slice the rested flank steak thinly against the grain.
- Step 6: Fan the steak slices on a plate, spoon the chimichurri generously over the top, and serve alongside the grilled squash.
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