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 Steak Crostini With Avocado-Horseradish Mayonnaise?

You need 12 ingredients. The key ingredients include: 1/2 teaspoon dried oregano, 3/4 teaspoon kosher salt, divided, 1/2 teaspoon freshly ground black pepper, 1/2 pound flank steak, and more.

Is Steak Crostini With Avocado-Horseradish Mayonnaise suitable as snacks & appetizers?

Yes, Steak Crostini With Avocado-Horseradish Mayonnaise falls under the Snacks & Appetizers category and is a great choice for this type of meal.

How do I store leftover Steak Crostini With Avocado-Horseradish Mayonnaise?

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

Steak Crostini With Avocado-Horseradish Mayonnaise

Name: Steak Crostini With Avocado-Horseradish Mayonnaise
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1/2 teaspoon dried oregano; 3/4 teaspoon kosher salt, divided; 1/2 teaspoon freshly ground black pepper; 1/2 pound flank steak; 1 ripe peeled avocado, seeded; 3/4 teaspoon wasabi ( Japanese horseradish); 1 teaspoon lime juice; 1 garlic clove, crushed; 3 tablespoons fat-free mayonnaise; Cooking spray; 12 (1/2-inch-thick) slices diagonally cut French baguette, toasted; Oregano sprigs (optional)

Try this homemade Steak Crostini With Avocado-Horseradish Mayonnaise recipe the whole family will love. Made with oregano, kosher salt, freshly ground b…

This Steak Crostini With Avocado-Horseradish Mayonnaise relies on simple, everyday ingredients such as dried oregano, kosher salt, divided, freshly ground black pepper and flank steak. It comes together quickly and makes 4 servings, at about 270 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 Snacks & Appetizers

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

Feel free to swap in similar ingredients you already have on hand and adjust seasoning to taste.

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

My Personal Notes

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Steak Crostini With Avocado-Horseradish Mayonnaise

Tips for the best results

Variations & substitutions

My Personal Notes

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