How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Mustard-Crusted Sirloin Steaks With Sautéed Zucchini?

You need 10 ingredients. The key ingredients include: 100 g butter, softened, 50 g fresh white breadcrumbs, 2 tbsp wholegrain mustard, 3 tbsp vegetable oil, and more.

Is Mustard-Crusted Sirloin Steaks With Sautéed Zucchini suitable as vegetarian?

Yes, Mustard-Crusted Sirloin Steaks With Sautéed Zucchini falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Mustard-Crusted Sirloin Steaks With Sautéed Zucchini?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Mustard-Crusted Sirloin Steaks With Sautéed Zucchin

Name: Mustard-Crusted Sirloin Steaks With Sautéed Zucchini
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 100 g butter, softened; 50 g fresh white breadcrumbs; 2 tbsp wholegrain mustard; 3 tbsp vegetable oil; 4 x 180 g sirloin steaks, each steak halved; 1 None onion, peeled and sliced; 1 None garlic clove, peeled and crushed; 300 g large courgettes, thinly sliced; 150 ml vegetable stock; 450 g oven-baked potato croquettes, to serve (optional)

Try this homemade Mustard-Crusted Sirloin Steaks With Sautéed Zucchini recipe the whole family will love. Made with butter, fresh white breadcrumbs, who…

This Mustard-Crusted Sirloin Steaks With Sautéed Zucchini relies on simple, everyday ingredients such as butter, softened, fresh white breadcrumbs, wholegrain mustard and vegetable oil. It comes together quickly and makes 4 servings, at about 740 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Vegetarian

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

Saved locally in your browser — visible only to you.

Mustard-Crusted Sirloin Steaks With Sautéed Zucchini

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions