This reuben crostini appetizer recipe is so delicious everyone will be fighting over the last piece! This recipe is incredibly easy, even if you’re not that skilled in the kitchen. Your guests will be none the wiser though, because everyone will be asking for the recipe. If you love traditional reuben sandwiches, you will love these! Make it for your St. Patrick’s Day gathering or any time of year.
*This post contains affiliate links which means I earn a small commission on purchases made at no additional cost to you.*
*This post contains affiliate links which means I earn a small commission on purchases made at no additional cost to you.*
Reuben Crostini Appetizer
Equipment
- slow cooker
Ingredients
Corned Beef
- 1 corned beef brisket, flat cut (comes with seasoning packet)
- 2 12-16 ounce beers (Killian's, Harp or similar)
- 2 bay leaves
Special Sauce
- 1 large white or yellow onion
- 2 Tbsp extra virgin olive oil (for caramelizing the onion)
- 2 Tbsp butter (for caramelizing the onion)
- 1/2 cup mayonaisse
- 2 Tbsp ketchup
- 1 Tbsp relish (dill or sweet can be used)
- 1 tsp white vinegar
Rueben Crostini Appetizer
- 1 French baguette (cut into 18 slices)
- olive oil to taste
- 1 cup shredded corned beef
- special sauce (above) to taste
- 2/3 cup sauerkraut, drained
- 1 cup shredded Swiss cheese
- fresh chives for garnish
Instructions
Corned Beef
- Place corned beef in a slow cooker. Add seasoning packet that comes with the corned beef, and bay leaves. Top with the beer. Add water until the beef is mostly covered with liquid.
- Turn slow cooker on high for 1 hour. Then, turn to low for 6-7 hours (for 4-5 pounds). Cook time will vary slightly based on the size of beef you get. If your beef is much larger, you will need to add time.
- Remove corned beef from slow cooker, allow to cool slightly and discard the fat. Shred.
Special Sauce
- Caramelize onion with extra virgin olive oil and butter.
- Allow onions to cool and mix together with mayo, ketchup, relish and vinegar.
Rueben Crostini Recipe
- Preheat oven to 350 degrees.
- Slice baguette into even slices (approximately 18 slices depending on the size of your baguette).
- Drizzle each slice with olive oil.
- Bake on parchment lined baking sheet at 350 for 5 minutes.
- While the bread is baking, shred cheese.
- Remove bread from oven and top each with: sauce, sauerkraut, corned beef and cheese.
- Bake for an additional 10-15 minutes or until cheese is melted.
- Top with chives.
- Let cool and enjoy!
Notes
WHAT DO DO WITH LEFTOVER CORNED BEEF
Reuben Sandwiches
We typically make a corned beef or two every year with the purpose of making traditional reuben sandwiches. To make a reuben sandwich, you will need rye bread. Simply follow the instructions above except add your ingredients to rye bread. They can be eaten cold or hot. We like to butter the rye bread and fry (similar to a grilled cheese). Enjoy with fries, tater tots or a salad on the side. Also pairs well with a cold beer!
Reuben Pizza
We also love to repurpose any leftover corned beef to make reuben pizza! Simply make your favorite pizza crust or buy one at the grocery store. I love the dough crusts from Trader Joe’s (in the deli section by the deli meat and cheese). Roll out the crust, poke holes and bake for a few minutes. (See my Heart Shaped Friendship Necklace Pizza recipe for more crust instructions.) Remove from the oven and add the special sauce, corned beef, sauerkraut and Swiss cheese. Add some mozzarella to the mix for an extra cheesy pizza! Then bake until golden brown.
KITCHEN TOOLS
Need some new kitchen tools? Here’s a list of some of my favorites, including my favorite baking/cooking sheets.
I hope you love this reuben crostini appetizer recipe! It’s perfect for serving up a crowd.
Looking for other crostini recipes? Try my Roast Beef Crostini Appetizer with Horseradish Sauce. You will love it!
-The Chic(ish) Chick
Want to see more ideas like this? Check out my Instagram, TikTok, or Pinterest pages!
