Gourmet Roast Beef Panini

Growing up, my idea of a fancy sandwich was two pieces of white bread with some deli meat and mayo. That’s how we did lunch in our house – quick and basic. The first time I saw a panini press at my friend’s house in college, I thought it was some fancy European kitchen gadget that nobody really needed.

But here’s the thing about paninis – they’re just grilled sandwiches with better posture. And when you take simple roast beef, add a few choice ingredients, and press it between two slices of good bread, something magical happens. The cheese melts perfectly, the bread gets that nice crunch, and suddenly your basic sandwich becomes something you’d actually look forward to eating.

What Kind of Roast Beef Should I Use?

For a really good panini, the type of deli roast beef you choose makes all the difference. Top round roast beef is usually your best bet since it’s lean but still has enough flavor to stand up to the other ingredients, though London broil or bottom round can work well too. When you’re at the deli counter, ask for the beef to be sliced very thin – this helps it heat quickly and evenly in your panini without getting tough. If you’re shopping at the pre-packaged section, look for roast beef labeled “rare” or “medium-rare” as it tends to be more tender and flavorful when heated. Just make sure to avoid any packages where the meat looks gray or has excess liquid in the package, as these are signs it might be past its prime.

Options for Substitutions

This sandwich is pretty flexible and you can switch things up based on what you have in your kitchen:

• Sturdy bread: While thick-cut bread works best for paninis, you can use sourdough, ciabatta, or even regular sandwich bread – just be careful not to press too hard when grilling if using softer bread.
• Provolone cheese: Feel free to swap provolone with Swiss, mozzarella, or white cheddar. Each will give you that nice melty texture you’re looking for.
• Roast beef: While roast beef is the star here, you can use leftover home-cooked roast beef, pastrami, or even turkey if you’re looking for a lighter option.
• Olive oil: Any neutral cooking oil or melted butter will work just fine for grilling the sandwich.
• Mayonnaise: Not a mayo fan? Try mustard, pesto, or garlic aioli instead. Each will add its own nice flavor twist.
• Red onion: Yellow or white onions work too, or try some quick-pickled onions for extra tang. If raw onions aren’t your thing, you can use caramelized onions instead.

Watch Out for These Mistakes While Cooking

The biggest challenge when making a roast beef panini is preventing the sandwich from becoming too wet – make sure to pat your tomato slices dry with paper towels before adding them, and place them between the cheese and meat rather than directly on the bread. Another common mistake is pressing the sandwich too hard or too quickly in the panini press, which can cause the fillings to squeeze out the sides – instead, apply gentle, steady pressure and let the heat do its work gradually. For the crispiest results, brush the outside of your bread with olive oil rather than butter, as oil has a higher smoke point and will give you those perfect golden-brown grill marks without burning. If you’re using a regular skillet instead of a panini press, place a heavy pot or pan on top of the sandwich to create even pressure, and cook on medium heat to avoid scorching the bread before the cheese has a chance to melt.

What to Serve With Roast Beef Panini?

A hot, melty roast beef panini is perfect with some crispy sides that balance out the rich sandwich. I love serving it with kettle-cooked potato chips or a handful of pickle spears for that satisfying crunch factor. If you’re feeling like something warm, a cup of French onion soup makes an amazing dipping companion – especially since you might already have au jus on hand for the sandwich. For a lighter option, try a simple coleslaw or mixed green salad dressed with a tangy vinaigrette to cut through the richness of the meat and cheese.

Storage Instructions

Keep Fresh: Already assembled paninis are best eaten right away while the cheese is melty and the bread is crispy. If you have leftovers, wrap them in aluminum foil and pop them in the fridge for up to 2 days. Just know that the bread might lose some of its crunch!

Prep Ahead: Want to save time? You can slice your tomatoes and onions up to a day ahead – just keep them in separate containers in the fridge. If you’re making au jus, that can be prepared ahead too and stored in the fridge for up to 3 days. When you’re ready to eat, just warm it up!

Warm Up: To bring back that fresh-made taste, pop leftover paninis in a panini press or skillet over medium heat until the cheese starts to melt again. You can also wrap them in foil and warm in a 350°F oven for about 10 minutes. The bread will crisp up nicely this way!

Preparation Time	10-15 minutes
Cooking Time	6-10 minutes
Total Time	16-25 minutes
Level of Difficulty	Easy

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 2000-2200
• Protein: 100-120 g
• Fat: 120-140 g
• Carbohydrates: 180-200 g

Ingredients

• 8 slices sturdy bread (thick-cut sourdough or ciabatta works best)
• 1/4 cup mayonnaise (I prefer Hellmann’s for its creamy texture)
• 1 lb deli roast beef (thinly sliced premium roast beef)
• 1 tbsp olive oil
• 1 medium red onion (thinly sliced into rings)
• 8 slices provolone cheese
• 2 medium tomatoes (sliced about 1/4-inch thick)
• au jus or horseradish sauce (optional, for dipping)

Step 1: Prepare the Bread

Lightly brush one side of each slice of bread with oil.

Place the bread, oiled side down, on a clean work surface to prevent sticking as you assemble the sandwiches.

Step 2: Assemble the Sandwiches

Spread 1 tablespoon of mayonnaise on the side of each slice opposite the oiled side.

On 4 of the bread slices, layer the roast beef, cheese, tomatoes, and red onion on top of the mayonnaise.

Complete the sandwich by placing the second slice of bread on top, with the oiled side facing up.

Step 3: Cook the Sandwiches

Preheat your panini maker.

Place 2 sandwiches at a time on the panini maker.

Cook for 3 to 5 minutes, or until the bread is crisp and dark golden brown, and the cheese is melted.

Remove the sandwiches from the panini maker with care.

Step 4: Slice and Serve

Cut each sandwich in half for easier handling and serving.

If desired, serve with au jus or horseradish sauce for dipping, to enhance the flavor of your sandwiches.