Steak Crostini With A Creamy Horseradish Sauce & Caramelized Onions
STEAK CROSTINI WITH A CREAMY HORSERADISH SAUCE & CARAMELIZED ONIONS is a medium American recipe that serves 8. 250 calories per serving. Recipe by Taylor Jackzen on YouTube.
Prep: 15 min | Cook: 35 min | Total: 1 hr
Cost: $13.27 total, $1.66 per serving
Ingredients
- 1 lb Sirloin Steak (trimmed and cut into 1/2‑inch strips)
- 0.5 loaf Baguette (sliced 1/2 inch thick)
- 2 large Yellow Onion (thinly sliced)
- 2 tbsp Unsalted Butter (cut into cubes)
- 2 tbsp Olive Oil (extra‑virgin preferred)
- 0.25 cup Heavy Cream (for a richer sauce)
- 0.5 cup Sour Cream (full‑fat for best flavor)
- 2 tbsp Prepared Horseradish (adjust to heat preference)
- 1 tsp Dijon Mustard
- 1 tsp Lemon Juice (freshly squeezed)
- to taste Salt
- to taste Black Pepper
- 1 tbsp Fresh Chives (chopped, for garnish)
Instructions
Make Horseradish Cream Sauce
In a mixing bowl combine sour cream, prepared horseradish, Dijon mustard, lemon juice, heavy cream, a pinch of salt and pepper. Whisk until smooth and creamy.
Time: PT5M
Caramelize Onions
Heat butter and 1 tbsp olive oil in a large skillet over medium heat. Add the sliced onions and a pinch of salt. Cook, stirring occasionally, for about 20 minutes until deep golden and sweet.
Time: PT20M
Sear Steak Strips
Season the steak strips with salt and pepper. In the same skillet (or a separate one) add the remaining 1 tbsp olive oil and increase heat to high. Sear the steak strips 2–3 minutes per side for medium‑rare, then remove and let rest for 5 minutes before slicing if needed.
Time: PT8M
Toast Baguette Slices
Preheat the oven to 375°F (190°C). Arrange baguette slices on a baking sheet, brush lightly with olive oil, and bake for 5–7 minutes until crisp and lightly golden.
Time: PT7M
Temperature: 375°F
Assemble Crostini
Top each toasted baguette slice with a spoonful of caramelized onions, a piece of steak strip, and a drizzle of horseradish cream. Garnish with chopped chives and serve immediately.
Time: PT5M
Nutrition Facts
- Calories
- 250
- Protein
- 12g
- Carbohydrates
- 20g
- Fat
- 12g
- Fiber
- 1g
Dietary info: Contains gluten, Contains dairy, Not vegan, Not vegetarian
Allergens: Dairy, Gluten, Mustard
Ingredient Substitutions
- Instead of Sirloin Steak: Flank steak, Ribeye steak
- Instead of Baguette: Ciabatta, French bread
- Instead of Yellow Onion: Sweet onion, Red onion
- Instead of Unsalted Butter: Olive oil
- Instead of Olive Oil: Vegetable oil
- Instead of Heavy Cream: Half‑and‑half
- Instead of Sour Cream: Greek yogurt
- Instead of Prepared Horseradish: Fresh grated horseradish
- Instead of Dijon Mustard: Whole grain mustard
- Instead of Lemon Juice: Lime juice
- Instead of Fresh Chives: Green onions
Equipment Needed
- Chef's Knife
- Cutting Board
- Large Skillet
- Small Saucepan
- Mixing Bowl
- Whisk
- Baking Sheet
- Oven
- Tongs
- Spoon
Critical Steps — Do Not Skip
- Caramelizing the onions slowly to develop deep sweetness.
- Searing the steak quickly over high heat to keep it juicy.
- Whisking the sauce until fully emulsified for a smooth texture.
Chef Tips from the Video
- Use a cast‑iron skillet for the best sear on the steak.
- Pat the steak dry with paper towels before seasoning for a better crust.
- Finish the sauce with a drizzle of good quality olive oil for extra richness.
Troubleshooting
Onions burn before becoming caramelized.
Reduce heat to medium‑low and add a splash of water or broth; stir more frequently.
Steak turns out tough or overcooked.
Sear quickly over high heat and remove when still pink inside; let it rest before slicing.
Sauce is too thin.
Add a little more sour cream or a pinch of extra heavy cream and whisk until thickened.
Storage
Refrigerator: Horseradish sauce and caramelized onions keep up to 3 days in airtight containers.
Freezer: Cooked steak strips freeze well for up to 2 months; thaw before reheating.
Room temperature: Assembled crostini should be served within 2 hours at room temperature.
Make-Ahead Tips
- Prepare the horseradish cream sauce a day ahead and store refrigerated.
- Caramelized onions can be made 24 hours in advance; reheat gently before assembling.
- Toast the baguette slices just before serving for maximum crunch.
Frequently Asked Questions
What is the cultural significance and history of steak crostini in American holiday party cuisine?
Crostini originated in Italy as toasted bread with toppings, but in the United States it has become a popular finger‑food for holiday gatherings. Combining steak, a classic American protein, with Italian‑style toast creates a fusion appetizer that reflects the multicultural nature of modern American celebrations.
What traditional regional variations of crostini exist in Italian cuisine compared to this American steak version?
Traditional Italian crostini often feature simple toppings like tomato‑basil bruschetta, pâté, or cheese spreads. The American steak crostini adds a protein‑rich element and a horseradish cream, which is not typical in Italy but aligns with American tastes for hearty, savory appetizers.
How is steak crostini traditionally served in the United States during holiday celebrations?
In the U.S., steak crostini is usually presented on a platter as bite‑size pieces, allowing guests to pick them up easily while mingling. They are often served warm, with the sauce on the side for guests to add extra heat if desired.
What occasions or celebrations is steak crostini commonly associated with in American culture?
Steak crostini is a favorite at holiday parties, New Year’s Eve gatherings, cocktail receptions, and any event where finger foods are needed. Its elegant appearance makes it suitable for both casual and formal celebrations.
What authentic ingredients are essential for a traditional horseradish cream sauce, and what are acceptable substitutes?
The authentic sauce uses sour cream, prepared horseradish, Dijon mustard, lemon juice, and a touch of heavy cream. If you lack sour cream, Greek yogurt works well; for heavy cream, half‑and‑half is an acceptable substitute, though the sauce will be slightly less rich.
What are the most common mistakes to avoid when making steak crostini at home?
Common pitfalls include overcooking the steak, which makes it tough, and burning the onions by using too high heat. Also, failing to let the sauce rest can result in a thin texture; chilling it for a few minutes helps it thicken.
Why does this recipe use a high‑heat sear for the steak instead of grilling it on a grill pan?
A high‑heat sear in a skillet creates a quick Maillard crust while keeping the interior juicy, which is ideal for bite‑size strips. Grilling can overcook the thin pieces and make them dry, especially when cooking in batches.
Can I make the horseradish cream sauce ahead of time and how should I store it?
Yes, the sauce can be prepared up to 24 hours in advance. Store it in an airtight container in the refrigerator; give it a quick stir before serving to recombine any separated liquid.
What texture and appearance should I look for when caramelizing the onions for this recipe?
The onions should turn a deep, uniform golden‑brown color and become soft and glossy. They should taste sweet, not bitter, and have a slightly jammy consistency without any raw crunch.
What does the YouTube channel Taylor Jackzen specialize in?
The YouTube channel Taylor Jackzen focuses on approachable, crowd‑pleasing recipes for parties and holidays, emphasizing quick finger foods, modern twists on classic dishes, and clear step‑by‑step video tutorials.
How does the YouTube channel Taylor Jackzen's approach to American party appetizers differ from other cooking channels?
Taylor Jackzen blends classic American comfort flavors with upscale presentation, often using simple pantry staples to create elegant bite‑size dishes. The channel prioritizes time‑saving techniques and detailed visual cues, setting it apart from channels that focus on elaborate or heavily plated meals.
Last updated: August 29, 2026
