Quick Marinated Steak with Roasted Garlic and Red Wine Vinegar

By AislePrompt Editorial · Published 2026-05-10 · Updated 2026-05-10

Tender steak marinated in a bright garlic and red wine vinegar blend, paired with simple roasted vegetables for a quick, flavorful dinner. This Mediterranean-inspired Whole30 recipe, ready in about 40 minutes, pairs sirloin steak, olive oil, red wine vinegar for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 calories and feeds 4, so it slots cleanly into a Whole30 week and pairs well with roasted sweet potato or a simple olive-oil salad. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1 lb sirloin steak
• 3 tbsp olive oil
• 2 tbsp red wine vinegar
• 4 garlic cloves, minced
• 1 tsp dried oregano
• 1 tsp salt
• 1/2 tsp black pepper
• 3 cups total mixed vegetables (broccoli florets, bell pepper strips, sliced mushrooms)

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Instructions

1. Step 1: In a bowl, whisk together 3 tbsp olive oil, 2 tbsp red wine vinegar, 4 minced garlic cloves, 1 tsp dried oregano, 1 tsp salt, and 1/2 tsp black pepper to make the marinade.
2. Step 2: Place 1 lb sirloin steak in a shallow dish and pour the marinade over it, turning to coat evenly. Let marinate for 15 minutes at room temperature.
3. Step 3: While steak marinates, preheat oven to 425°F. Toss 3 cups mixed vegetables with 1 tbsp olive oil and a pinch of salt and pepper, then spread on a baking sheet.
4. Step 4: Roast vegetables for 15 minutes until tender and edges are slightly caramelized.
5. Step 5: Heat a cast iron skillet over high heat. Remove steak from marinade, shaking off excess, and sear for 4 minutes per side for medium-rare, or longer to desired doneness.
6. Step 6: Let the steak rest 5 minutes before slicing thinly against the grain. Serve sliced steak alongside the roasted vegetables.