If you're looking for an easy but impressive appetizer, look no further than this steak crostini. Choose from two different topping variations, or enjoy both, for wonderful flavor combinations in every bite. Perfect for entertaining.

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In all honesty, we don't have appetizers all that much these days. With young kids, we tend to be all about getting food on the table quickly at meal times so jump straight to mains.
But now and then, they are perfect whether as a snack, or to start a meal, and particularly when entertaining. These little bites are easy to put together, but taste divine, and so are perfect whether you want to treat guests, or yourself.

What are crostini?
Crostini means "little toasts" as they refer to the toasted bread, made by cutting thin slices, drizzling with olive oil then toasting or grilling until crisp. They're a popular Italian antipasto, perfect for snacking on, or you can serve them as a side.
Traditionally, crostini are made with larger pieces of bread that you might then cut up. In fact, the idea itself dates back to medieval times when the bread was used in place of a dish. These days, at least outside of Italy, it's more popular to use slices of baguette to make crostini, maybe in part because it makes a great easy-to-hold and bite into size.
You can make crostini with a whole range of toppings, from a simple oil and herbs to cheese, meat and much more. Since they're great as an appetizer, they're also great for entertaining. And so sometimes it can be fun to get a little fancier with the toppings!

Inspiration from an oil
I originally made these as a way to show off truffle oil, as it's perfect as a finishing oil. That means one of the main things is you don't really want to cook with it as the flavor can be lost or go a little odd, you more want to drizzle it on at the end.
When I first got some, I was new to using it, so I did some research on what truffle oil goes with. Some of the top things were:
- mushrooms in all forms
- pasta eg try a drizzle on your mac and cheese
- other carbs eg on pizza (like my green pizza), potatoes (truffle fries!) and polenta
- various vegetables eg cauliflower, squash and asparagus
- steaks and beef carpaccio.
With all these in mind, it wasn't much of a jump to make steak crostini with mushroom pate, topped with a drizzle of truffle oil. The flavors all go so well together, and they're a lovely mix of crisp bread, soft mushrooms and tender steak. Then the aromatic truffle oil brings it all together.

Different topping combinations with steak
After my first delicious success, I then started thinking about other combinations that paired well with steak. This time, I used goat cheese as the base and added a grilled baby tomato on top and a balsamic glaze drizzle.
The tomatoes are easy to cook as you grill the steak, either on the side of the grill pan, if grilling, or they can also be cooked in a skillet/frying pan. Cooking helps bring out the flavors and makes them wonderfully soft and juicy as you bite into them.
Both combinations are so tasty it seemed only fair to share both, plus the variation looks pretty on the serving plate/platter. It's also fun to try both as you nibble on them - an excuse to go back for another!
If you want to try more combinations, why not try some of these ideas:
- With a blue cheese base and maybe a little sour cream and chives on top.
- With caramelized onions, bacon jam or a tomato or fruity chutney with the goat cheese base.
- With a mustard dressing or the whiskey mustard sauce with my haggis bon bons, either just that or with added caramelized onions.
How to make steak crostini
While there are a couple of steps in making these, everything is easy and you can do some ahead of time. If you are making your own pate, this can be prepared a few days ahead, as can the crostini themselves. Then you simply cook and slice the steak, cook the tomatoes and put everything together.

If you want to make your own mushroom pate, it's relatively easy. You just soften some onions, add some chopped mushrooms, thyme and seasoning (as well as ideally some rehydrated porcini) then finish with a little white wine before blending (I mildly adapted this recipe from Smitten Kitchen). It provides a lovely earthy, smooth base and pairs well with the steak.
What cut of steak should you use?
Since you are going to be serving these as finger food, you want the beef to be nice and tender so it's easy to eat. So, I'd suggest cuts like boneless ribeye, filet mignon (tenderloin), sirloin or New York strip steak are all good choices.
A few key tips as you prepare the steak:
- Make sure you allow time for the meat to come to room temperature before cooking - you don't want the middle cold and it cooks more evenly this way.
- Season the steak before cooking to add flavor, but keep it simple - just salt and pepper, along with some oil.
- Cook medium rare for a great balance of flavor and tenderness.
- Let the steak rest before slicing - this lets the steak reabsorb the juices and leads to a more tender, flavorful steak.
- Cut against the grain - this helps each slice be easier to eat.

These steak crostini are the kind of appetizer everyone will be drawn to on your table, and once they take a bite they won't be disappointed. A delicious combination of flavors, they're a truly delectable bite. Just make sure you make enough.
Looking for more finger food appetizers? Try these!
- Sausage rolls
- Baked coconut shrimp with mango dipping sauce
- Prosciutto wrapped dates
- Cauliflower pakora
- Plus get more appetizer recipes in the archives.
Steak crostini (two ways!)
Ingredients
- 1 small baguette either a smaller size or demi baguette (not the huge long ones)
- 2 tablespoon extra virgin olive oil approximately, may ned a little more/less
- 8 oz sirloin steak or other tender and flavorful cut of beef eg filet mignon, ribeye
- 1 pinch salt to taste
- 1 pinch pepper to taste
For mushroom version - half of total
- 3 oz mushroom pate (you may need a little more/less depending on size of bread slices)
- 2 teaspoon truffle oil approximately - to drizzle
For goat cheese version - half of total
- 2 oz soft goat cheese (you may need a little more/less depending on size of bread slices)
- 8 baby tomatoes
- ½ tablespoon balsamic glaze approximately - to drizzle
Instructions
- To make the crostini, cut the baguette on a slight diagonal in around ¼ - ½ inch (0.6 - 1.25cm) thick slices. Lightly brush each slice of bread with oil on both sides and place the slices on a baking sheet/tray. Grill/broil on both sides so they are very lightly brown and crisp. Watch closely as they can quickly burn. Alternatively, you can bake in the oven at 400F/200C for around 8 minutes - again watch relatively closely as the time can vary depending on the thickness and density of the bread. You can make the crostini a day or two ahead, then store in a container at room temperature.
- For the steak, make sure you allow some time for the meat to come to room temperature before cooking, around 30 minutes. Sprinkle a little salt and pepper on both sides of the steak and drizzle both sides with a little olive oil. You can cook the steak in a couple ways - I like to use a grill pan but you can also sear in a cast iron skillet/frying pan. Cook for between 2 - 5 minutes each side depending on the thickness of the steak -you are looking to achieve medium rare, so it should have a nice sear/grill marks on the outside but still have some 'bounce' when pressed so it's pink inside. Remove from the pan/skillet and leave to rest a minute or two before cutting into thin slices, across the grain.
- Cook the tomatoes at the same time as the steak - drizzle with a small amount of oil and cook to the side of the pan/skillet until the skins are gently browning, turning as needed, and the tomatoes softening. It's OK if they burst a little, but you don't want them falling apart.
- As the steak rests, or once all is ready, start with the base topping on the crostini. Spread a thin layer of mushroom pate on half of the slices, and spread the other half with goat cheese. Top each slice with a piece of steak, or a couple smaller pieces as fits. For the mushroom pate version, drizzle each with a small amount of truffle oil. For the goat cheese version, top each piece of steak with a tomato then drizzle with a little balsamic glaze. Best served while still slightly warm.
Video
Nutrition
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This was originally shared as a sponsored post in partnership with Pomora in December 2017. It has since been updated to include new photos, additional information and the added topping variation.
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Michele @ Bacon Fatte says
These crostini are absolutely beautiful! I love mushrooms and beef together, and what a perfect way to enjoy them!
Caroline's Cooking says
Thank you Michele, they do certainly go well together, that's for sure, and this is such a lovely way to enjoy them.
Laura says
What a great looking recipe. I can't believe that you can adopt an olive tree and get olive oil from your adopted tree -that is so cool!! That would be such a unique Christmas gift!
Caroline's Cooking says
Thanks Laura, and I know it's a lovely idea. Plus I've tried a number of Pomora oils now and they are all so good!
Christine @ Christine's Pantry says
Looks great!
Caroline's Cooking says
Thank you!
Robin Daumit says
Mushrooms and beef. Perfect combo!
Caroline's Cooking says
Thanks you, they do go really well together, and the truffle oil is such a great way to enhance the flavors.
Lynn Elliott Vining says
These look and sound awesome!
Caroline's Cooking says
Thanks, it's so delicious.
ally says
A few of these and you've had a meal! Stunning! And, I know deeeelish!! xo
Caroline's Cooking says
That may possibly have happened when I made these originally... 😉 Thanks, indeed truly delicious.