Balsamic Flank Steak With Grilled Zucchini

The first time I made this dish was during a backyard dinner party that almost got rained out. Something about the smell of balsamic hitting the hot grill made everyone forget about the ominous clouds. My friend Sarah actually stood under an umbrella holding tongs just to keep things cooking.

Last summer my neighbor stopped over the fence to ask what smelled so amazing. Ended up inviting his whole family over and we ate standing up around the grill because nobody wanted to wait for proper plates.

Ingredients

• 1 ½ lbs flank steak: Flank steak takes marinade beautifully and has that perfect grain for slicing thin against
• ¼ cup balsamic vinegar: This creates those dark caramelized bits and gives the meat a tangy depth
• 2 tbsp olive oil: Helps the marinade coat evenly and prevents sticking on the grill
• 2 garlic cloves, minced: Fresh garlic mellows beautifully during marinating
• 1 tbsp fresh rosemary: Rosemary stands up to the bold balsamic flavor without disappearing
• 1 tsp Dijon mustard: The secret emulsifier that makes the marinade cling to every inch of meat
• 1 tsp kosher salt and ½ tsp black pepper: Simple seasoning that lets the marinade shine
• 3 medium zucchini: Get ones that feel heavy for their size they grill up sweeter
• 2 tbsp olive oil for zucchini: Don't skip this or you'll end up with sad dried-out strips
• 6 oz feta cheese: Block feta gives you better control over saltiness than pre-crumbled
• ¼ cup Greek yogurt: Makes the whipped feta lighter and almost mousse-like
• 1 tbsp olive oil and 1 tsp lemon juice: These transform the feta into something silky and spreadable
• Fresh mint or parsley: Fresh herbs at the end make everything taste brighter and more finished

Instructions

Whisk together your marinade:

Combine the balsamic vinegar olive oil garlic rosemary Dijon mustard salt and pepper in a shallow dish until everything's blended together

Marinate the steak:

Add the flank steak to the dish turning it several times to coat then let it hang out in the fridge for at least an hour

Fire up the grill:

Get your grill or grill pan heated to medium-high you want it hot enough that you hear a satisfying sizzle when meat hits metal

Prep the zucchini:

Brush those zucchini planks with olive oil and hit them with the salt and pepper on both sides

Grill the steak:

Shake off any excess marinade and grill for 4 to 5 minutes per side for medium-rare or adjust timing based on how you like your meat cooked

Let it rest:

Tent the steak loosely with foil and give it a full 10 minutes this is non-negotiable for juicy meat

Grill the zucchini:

While the steak rests throw the zucchini on for 2 to 3 minutes per side until you see nice char marks

Make the whipped feta:

Blend the feta Greek yogurt olive oil lemon juice and black pepper until completely smooth and creamy

Slice and assemble:

Cut the steak thinly against the grain then spread that whipped feta on a platter and pile everything on top

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This recipe became my go-to for those nights when you want to eat something special but don't want to overthink it. Something about the combination hits every craving at once.

Getting The Right Grill Marks

I spent years chasing those perfect restaurant cross-hatch marks before realizing they're mostly for show. What actually matters is letting the sear happen undisturbed. Every time you move the meat you're losing the contact that creates that beautiful crust.

Making The Whipped Feta Your Own

Sometimes I'll add a roasted red pepper to the feta blend or swap in basil instead of mint. The base ratio of feta to yogurt is pretty forgiving as long as you keep the texture spreadable.

Grill Temperature Mastery

Learning to trust your hand over the grill to judge heat changed everything for me. Hold your palm about five inches above the grates and count how long you can keep it there. Three to four seconds means you're at that perfect medium-high sweet spot.

• Clean grates while they're hot with a stiff brush
• Oil the grates right before cooking not ahead of time
• Let meat come to room temperature for 20 minutes before grilling

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Hope this becomes one of those recipes you find yourself making without even looking at the measurements anymore.

Recipe FAQs

→ How long should I marinate the flank steak?

Marinate the steak for at least 1 hour, though up to 8 hours will yield deeper flavor penetration and more tender results.

→ Can I cook this indoors without a grill?

Yes, use a grill pan or cast iron skillet over medium-high heat. You can also broil the steak and zucchini for similar results.

→ What's the best way to slice flank steak?

Always slice flank steak thinly against the grain. This shortens the muscle fibers, making each bite more tender.

→ Can I make whipped feta ahead of time?

Absolutely. Whip the feta mixture up to 2 days in advance and store it in an airtight container in the refrigerator.

→ What temperature should the steak be cooked to?

For medium-rare, aim for 130-135°F internal temperature. Let the steak rest for 10 minutes to allow juices to redistribute.