20-Minute Sheet-Pan Crispy Garlic Chimichurri Steak and Baby Potatoes
Crispy roasted baby golden potatoes and juicy, deeply browned flank steak bites roasted on one sheet pan at 450°F, smothered in a scratch-made zesty chimichurri herb vinaigrette.
To make 20-minute sheet-pan chimichurri steak and potatoes, microwave 1 lb halved baby gold potatoes for 3 minutes until fork-tender, then toss on a preheated baking sheet with 1 tbsp olive oil, salt, and pepper at 450°F (230°C) for 10 minutes. Cube 1.25 lbs flank or sirloin steak into 1-inch bites, season with smoked paprika and garlic powder, and add to the hot sheet pan. Roast for 5 to 6 minutes, switching to high broil for the final 90 seconds until steak edges are caramelized. Drizzle immediately with fresh chimichurri (finely chopped parsley, garlic, red wine vinegar, oregano, red pepper flakes, and olive oil).
Why This Recipe Conquers Weeknights
- Pre-Steaming Potatoes Hack: Microwaving halved baby potatoes for 3 minutes par-cooks their starchy interior, allowing them to crisp up deeply on the sheet pan in just 10 minutes.
- Staggered Sheet Pan Timing: Adding steak cubes during the final 6 minutes prevents overcooking, ensuring a juicy medium-rare center while the potatoes achieve golden brown edges.
- Raw Herb Chimichurri Punch: Never cook the chimichurri sauce—spooning it fresh over hot, resting steak allows the vinegar and herbs to bloom without losing bright color or grassy aromas.
Steak Cut Comparison for 20-Minute Sheet Pan Roasting
| Beef Cut | Sear / Crust Speed | Tenderness | Best Roasting Temp | Verdict |
|---|---|---|---|---|
| Flank Steak | Rapid (high surface area) | Very tender (cut against grain) | 450°F (230°C) | Top Pick for Fast Searing (Recommended) |
| Top Sirloin | Excellent browning | Naturally tender & lean | 450°F (230°C) | Great High-Protein Option |
| Ribeye Cubes | Ultra-crispy fat rendering | Melt-in-mouth richness | 425°F (220°C) | Decadent & juicy |
| Stew Meat / Chuck | Slow | Tough without long braise | N/A | Avoid for quick sheet pans |
20-Minute Sheet-Pan Crispy Garlic Chimichurri Steak and Baby Potatoes
Tested and approved by Elena Bennett • Serves 4
Ingredients
Step-by-Step Instructions
- Par-Cook the Potatoes: Preheat oven to 450°F (230°C) with a heavy rimmed baking sheet inside. Place halved baby potatoes in a microwave-safe bowl with 1 tbsp water; cover and microwave on high for 3 minutes until just tender.
- Crisp Potatoes on Hot Sheet Pan: Carefully remove the blazing-hot sheet pan from the oven. Toss drained potatoes with 1 tbsp olive oil, 1/2 tsp salt, and 1/4 tsp pepper. Arrange cut-side down on the hot pan and roast for 10 minutes until deeply golden and blistered.
- Season & Add Steak Bites: Toss cubed steak with 1/2 tbsp olive oil, smoked paprika, garlic powder, remaining salt, and pepper. Pull the sheet pan out, push potatoes to the sides, and scatter steak cubes in the center in a single spaced layer.
- Flash Roast & High Broil: Return sheet pan to oven and roast at 450°F for 4 minutes. Switch to HIGH BROIL for 90 to 120 seconds until steak cubes develop sizzling browned edges while remaining tender inside.
- Whisk Chimichurri & Serve: In a small bowl, whisk minced parsley, remaining garlic, oregano, red wine vinegar, crushed red pepper flakes, 1.5 tbsp olive oil, and a pinch of flaky salt. Spoon chimichurri generously over the hot steak and potatoes. Serve sizzling hot!
Nutrition Facts (Per Serving):
Elena’s Preheated Pan Searing Trick
Leaving your metal baking sheet inside the oven while it preheats to 450°F turns your sheet pan into a flat-top griddle! When your par-cooked potatoes and steak hit the piping hot metal, they immediately sizzle and build a dark caramelized crust without losing moisture.