Steak Crostini with a Creamy Horseradish Sauce and Caramelized Onions

Steak Crostini with a Creamy Horseradish Sauce and Caramelized Onions is a tasty and easy appetizer. It has juicy steak, soft onions, and a spicy creamy sauce on crunchy bread. This recipe is great for parties or a quick snack.

Why Make This Recipe

This recipe is simple to make but looks and tastes special. The flavors of the steak, horseradish sauce, and sweet caramelized onions mix very well. It is perfect if you want to impress guests without much work. Also, it uses few ingredients you might already have at home.

How to Make Steak Crostini with a Creamy Horseradish Sauce and Caramelized Onions

1. Season the steak with salt, black pepper, garlic powder, and dried thyme. Coat it well. Let it rest for at least 30 minutes.
2. Mix mayonnaise, horseradish, Dijon mustard, and lemon juice in a bowl. Add salt and pepper. Keep this sauce in the fridge until needed.
3. In a pan, melt butter on medium heat and add the sliced shallots. Cook until soft.
4. Add balsamic vinegar, brown sugar, salt, and pepper. Cook the shallots until they are golden and caramelized (around 30 minutes). Set aside.
5. Heat olive oil in a pan on medium-high heat. Cook the steak for about 4 minutes each side for medium-rare or to your choice. Remove and let it rest.
6. Preheat the oven to 375°F (190°C). Brush baguette slices with olive oil and toast them for 5-7 minutes until golden.
7. Slice the steak thinly.
8. Spread the creamy horseradish sauce on each toasted slice.
9. Top with steak slices and caramelized shallots.
10. Arrange on a plate. Garnish with fresh thyme or parsley if you like.
11. Serve right away and enjoy!

Ingredients

• 1 pound filet mignon or tenderloin
• Salt and black pepper (to taste)
• 2 tablespoons unsalted butter
• 1 teaspoon garlic powder
• 1 teaspoon dried thyme
• Baguette (thinly sliced)
• Olive oil (for brushing)
• 1/2 cup mayonnaise
• 2 tablespoons horseradish
• 1 tablespoon Dijon mustard
• 1 tablespoon lemon juice
• Salt and black pepper (to taste)
• 2 tablespoons unsalted butter
• 2 large shallots (thinly sliced)
• 1 tablespoon balsamic vinegar
• 1 tablespoon brown sugar
• Salt and black pepper (to taste)

Directions

1. Season the steak with salt, black pepper, garlic powder, and dried thyme. Let it sit for at least 30 minutes.
2. Make the horseradish sauce by mixing mayonnaise, horseradish, Dijon mustard, and lemon juice. Add salt and pepper. Keep in fridge.
3. Melt butter in a skillet on medium heat. Add sliced shallots and cook until soft.
4. Add balsamic vinegar, brown sugar, salt, and pepper. Cook until shallots are golden and caramelized (about 30 minutes). Set aside.
5. Heat olive oil on medium-high heat. Cook steak to your liking (about 4 minutes each side for medium-rare). Let rest.
6. Preheat oven to 375°F (190°C). Brush baguette slices with olive oil. Bake 5-7 minutes until golden.
7. Slice steak thinly.
8. Spread horseradish sauce on each baguette slice.
9. Top with steak and caramelized shallots.
10. Serve immediately.

How to Serve Steak Crostini with a Creamy Horseradish Sauce and Caramelized Onions

Serve the steak crostini warm or at room temperature. They are great as an appetizer for guests or a light snack. Pair them with a simple salad or a glass of red wine for a nice touch.

How to Store Steak Crostini with a Creamy Horseradish Sauce and Caramelized Onions

Store the leftover components separately. Keep the steak and caramelized onions in an airtight container in the fridge for up to 3 days. The sauce can also be kept refrigerated for up to a week. Toast the baguette slices fresh before serving for the best crunch.

Tips to Make Steak Crostini with a Creamy Horseradish Sauce and Caramelized Onions

• Let the steak rest after cooking to keep it juicy.
• Slowly caramelize shallots to get the best sweetness and texture.
• Use sharp horseradish for a strong sauce flavor. Adjust to your taste.
• Toast the bread just before assembling to avoid sogginess.
• Slice the steak thinly for easy bites.

Variation

You can use other cuts of steak like sirloin or ribeye. For a milder sauce, reduce the horseradish amount or replace some mayo with sour cream. You can also add fresh herbs like chives or parsley on top for extra color and flavor.

FAQs

Can I use pre-cooked steak for this recipe?
Yes, you can use leftover cooked steak. Just slice it thin and warm it up before adding on the crostini.

How spicy is the horseradish sauce?
The sauce has a mild spicy kick from the horseradish. You can use less horseradish if you want it milder.

Can I prepare the caramelized onions ahead of time?
Yes, caramelized onions keep well in the fridge for up to 3 days. Reheat gently before adding to the crostini.

What bread works best for crostini?
Thinly sliced baguette works best because it toasts nicely and holds toppings without getting soggy.

Enjoy making and sharing this delicious Steak Crostini with a Creamy Horseradish Sauce and Caramelized Onions!

Steak Crostini with Creamy Horseradish Sauce and Caramelized Onions

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• Author: Emma
• Total Time: 75 minutes
• Yield: 4 servings 1x
• Diet: None

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Description

A tasty and easy appetizer with juicy steak, soft onions, and a spicy creamy sauce on crunchy bread.

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Ingredients

Scale 1x2x3x

• 1 pound filet mignon or tenderloin
• Salt and black pepper (to taste)
• 2 tablespoons unsalted butter
• 1 teaspoon garlic powder
• 1 teaspoon dried thyme
• Baguette (thinly sliced)
• Olive oil (for brushing)
• 1/2 cup mayonnaise
• 2 tablespoons horseradish
• 1 tablespoon Dijon mustard
• 1 tablespoon lemon juice
• 2 large shallots (thinly sliced)
• 1 tablespoon balsamic vinegar
• 1 tablespoon brown sugar

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Instructions

1. Season the steak with salt, black pepper, garlic powder, and dried thyme. Let it sit for at least 30 minutes.
2. Make the horseradish sauce by mixing mayonnaise, horseradish, Dijon mustard, and lemon juice. Add salt and pepper. Keep in fridge.
3. Melt butter in a skillet on medium heat. Add sliced shallots and cook until soft.
4. Add balsamic vinegar, brown sugar, salt, and pepper. Cook until shallots are golden and caramelized (about 30 minutes). Set aside.
5. Heat olive oil on medium-high heat. Cook steak to your liking (about 4 minutes each side for medium-rare). Let rest.
6. Preheat oven to 375°F (190°C). Brush baguette slices with olive oil. Bake 5-7 minutes until golden.
7. Slice steak thinly.
8. Spread horseradish sauce on each baguette slice.
9. Top with steak and caramelized shallots.
10. Serve immediately.

Notes

For best results, let the steak rest after cooking to keep it juicy. Toast the bread just before assembling to avoid sogginess.

• Prep Time: 30 minutes
• Cook Time: 45 minutes
• Category: Appetizer
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 1 serving
• Calories: 400
• Sugar: 6g
• Sodium: 500mg
• Fat: 21g
• Saturated Fat: 8g
• Unsaturated Fat: 10g
• Trans Fat: 0g
• Carbohydrates: 30g
• Fiber: 2g
• Protein: 25g
• Cholesterol: 70mg