Appetizer Recipes just got a serious upgrade. These steak crostini aren’t just finger food—they’re flavor-packed bites with caramelized onions, creamy horseradish sauce, and perfectly cooked steak. If you’re after recipes appetizer ideas that impress, or hunting down your next go-to recipe appetizer, this one covers it. It even scratches that Creamy Pasta Recipes itch by delivering rich, velvety texture in a whole new way. Love Pasta sauce recipes? This sauce hits similar notes, only bolder. Into Creamy Soup Recipes Easy enough for Sunday but classy enough for a dinner party? Think of this as the crispy, meaty cousin. And if you’re craving a bit of spice like Indian appetizer recipes bring, a touch of horseradish gives you that kick.
Table of Contents
- 1) Key Takeaways
- 2) Easy Steak Crostini with Horseradish Sauce Recipe
- 3) Ingredients for Steak Crostini with Horseradish Sauce
- 4) How to Make Steak Crostini with Horseradish Sauce
- 5) Tips for Making Steak Crostini with Horseradish Sauce
- 6) Making Steak Crostini with Horseradish Sauce Ahead of Time
- 7) Storing Leftover Steak Crostini
- 8) Try these Appetizers next!
- 9) Steak Crostini with Horseradish Sauce
- 10) Nutrition
1) Key Takeaways
- Learn the secret to steak crostini that actually stays crisp
- Balance bold horseradish with creamy sour cream
- Cook steak right so it melts in your mouth, not your fingers
- Caramelized onions make everything better, every time
2) Easy Steak Crostini with Horseradish Sauce Recipe
When people say Appetizer Recipes are just warm-ups for the real meal, I always laugh. Not these. This one? It steals the spotlight before dinner even hits the table. These steak crostini with horseradish sauce start with toasty bread that’s crisp at the edge, just soft enough in the center, and layered with tangy cream, savory onions, and a bite of juicy steak.
I make these when I want guests to stop mid-sentence and ask, “What is this?” It’s the kind of recipe appetizer that looks like you worked way harder than you actually did. And that sauce? If you love Creamy Pasta Recipes or even crave Pasta sauce recipes with a little edge, you’ll get the appeal of this one immediately.
With nods to Creamy Soup Recipes Easy and even bold Indian appetizer recipes, this bite-sized recipe builds layers of flavor you can taste in every crumb. Let’s get into it.
3) Ingredients for Steak Crostini with Horseradish Sauce
French baguette: I go for one that’s crusty on the outside and light in the middle. It slices well and toasts up just enough to hold the toppings without falling apart.
Olive oil: A light brush on the bread before toasting gives it that golden crunch. Go easy, but don’t skip it.
Butter: A tablespoon is all you need to start the onions on the right foot. It adds depth that oil alone can’t give.
Yellow onion: Sliced thin and slow-cooked, this becomes sweet and rich, the kind of flavor that sticks with you.
Sugar: A pinch helps those onions caramelize evenly. Don’t worry, it won’t make them sweet—just balanced.
Salt: Divided up, used in the onions and the sauce. Taste as you go, always.
Sour cream: The creamy base of our sauce. It softens the punch of the horseradish while keeping the texture silky.
Prepared horseradish: Start small and build up. It should make your nose tingle, not burn.
Black pepper: A few cracks give the sauce just enough bite to stand up to the steak.
Ribeye or sirloin steak: About a pound. Cook it medium rare and let it rest. Slice thin across the grain for tenderness.
Fresh herbs: Optional, but chives or thyme give a nice contrast and color when sprinkled on top.
4) How to Make Steak Crostini with Horseradish Sauce
Step 1. Preheat the oven to 400°F. Slice your baguette, brush both sides lightly with olive oil, and toast for about 8 to 10 minutes. You want golden and crisp.
Step 2. While those toast, melt butter in a skillet over medium heat. Add sliced onions, sugar, and a pinch of salt. Stir every few minutes for 15 to 20 minutes, until caramelized and soft.
Step 3. In a bowl, mix sour cream, horseradish, the rest of the salt, and black pepper. Taste and adjust the horseradish if you want more kick.
Step 4. Get a skillet hot. Pat your steak dry and season both sides. Sear 3 to 4 minutes per side. Let it rest 10 minutes, then slice thin against the grain.
Step 5. Now the fun part: spread a bit of sauce on each crostini, top with onions and a slice of steak. Sprinkle herbs if you want. Serve them up and don’t blink—they’ll vanish fast.
5) Tips for Making Steak Crostini with Horseradish Sauce
Don’t rush the onions. Caramelizing takes time, and if you turn up the heat, you’ll just burn them. Keep it slow and low for the best result.
The steak matters. Use one that has enough marbling to stay juicy. Cook it to medium rare, and let it rest. Slice it thin, and make sure you cut against the grain so the texture stays tender.
If your bread feels dry after toasting, brush a little olive oil on again before assembling. It helps everything stick and adds richness in every bite. The best appetizer recipes don’t leave anything behind.
6) Making Steak Crostini with Horseradish Sauce Ahead of Time
You can knock out a few parts of this ahead of time. The onions? They’ll sit in the fridge for up to four days and taste even better the next. The sauce? That’s good for at least three.
Cook the steak in advance if you like, just let it come to room temperature before serving. Cold steak isn’t fun unless that’s the plan. Keep it wrapped well to stay juicy.
Toast the crostini just before serving. That’s the only thing I wait on. Everything else stores well. It’s one of those recipe appetizer options that actually works for prep and polish.
7) Storing Leftover Steak Crostini
If you end up with leftovers, keep the elements separate. Store the sauce in a sealed container for up to four days. The onions can last about five.
The steak holds well for three days in the fridge, just slice it as needed. Bread gets tricky. Re-toast it if it goes soft, or repurpose it with soup or salad.
This is one of those Appetizer Recipes where it’s best to build fresh, so your crostini stays crisp and the flavors pop. Assemble what you need, save the rest.
8) Try these Appetizers next!
9) Steak Crostini with Horseradish Sauce
Steak Crostini with Horseradish Sauce – Appetizer Recipes Done Right
Ingredients
- 1 French baguette, sliced into ½ inch pieces
- Olive oil, for brushing
- 1 tablespoon butter
- 1 large yellow onion, thinly sliced
- 1 teaspoon sugar
- 1 teaspoon salt, divided
- ¾ cup sour cream
- 2 tablespoons prepared horseradish (more or less to taste)
- ½ teaspoon black pepper
- 1 (1 lb) boneless ribeye or sirloin steak
- Fresh thyme or chives, for garnish (optional)
Instructions
- Preheat your oven to 400°F. Lay out the baguette slices on a baking sheet, brush them lightly with olive oil, and toast for 8–10 minutes or until crisp and golden.
- In a skillet over medium heat, melt the butter. Add the onions, sugar, and ½ tsp salt. Cook slowly for 15–20 minutes, stirring occasionally, until the onions are deep golden brown.
- While the onions caramelize, mix together the sour cream, horseradish, ½ tsp salt, and black pepper in a bowl. Taste and adjust the horseradish to your liking.
- Pat the steak dry and season it well with salt and pepper. Sear in a hot skillet for 3–4 minutes per side for medium rare. Let it rest for 5–10 minutes, then thinly slice.
- To assemble: Spread a layer of horseradish sauce on each crostini. Top with caramelized onions and a slice of steak. Garnish with herbs if using. Serve warm or at room temp.
10) Nutrition
Serving Size: 1 crostini, Calories: 180, Sugar: 2g, Sodium: 210mg, Fat: 9g, Saturated Fat: 3g, Carbohydrates: 15g, Fiber: 1g, Protein: 8g, Cholesterol: 20mg
Written by Eleanor for Eleanor Cooks
Leave a Comment