Roast Beef Sandwich
Thinly sliced, tender roast beef piled high on crusty bread with crisp lettuce, ripe tomatoes, and a punchy horseradish cream sauce. This classic deli-style sandwich comes together in minutes, making it the perfect quick lunch or casual dinner that feels hearty without being heavy.
For 4 servings
- mix · ~1 min
Make the horseradish cream sauce.
1.In a small bowl, combine sour cream, prepared horseradish, dijon mustard, salt, and black pepper.2.Stir until smooth and evenly blended. Set aside. - prep · ~3 min
Toast the bread slices.
1.Place sourdough slices in a toaster, under a broiler, or on a dry skillet.2.Toast until golden and crisp on both sides (1-2 minutes per side).TIPToasting prevents the bread from getting soggy once the sauce and tomatoes are added. - assemble · ~2 min
Assemble the sandwiches.
1.Spread a generous layer of horseradish cream sauce on one side of each toasted slice.2.On 4 slices, layer lettuce leaves, tomato slices, and red onion rings.3.Pile the sliced roast beef evenly over the vegetables.4.Top with the remaining 4 slices of bread, sauce side down. - serve
Slice and serve immediately.
Cut each sandwich in half diagonally with a sharp knife. Serve right away while the bread is still warm and crisp.
TIPFor a picnic, wrap tightly in parchment paper instead of slicing.
What to keep in mind.
6 tips from the recipe — small details that make a real difference to the final dish.
- 1Slice the roast beef paper-thin against the grain for the most tender bite.
- 2Let the roasted eye of round rest 15 minutes before slicing to retain juices.
- 3Pat tomato slices dry with paper towels to keep the bread from getting soggy.
- 4Make the horseradish cream sauce a day ahead; the flavors meld and deepen overnight.
- 5For extra crunch, lightly toast the inside of the bread only, leaving the outer crust soft.
- 6Use a sharp serrated knife to cut the sandwich cleanly without squishing the filling.
Adapt it for your goals.
Low-oil
Replace sour cream with nonfat Greek yogurt and use extra-lean roast beef to reduce fat without sacrificing creaminess.
spicySpicy
Add a thin layer of sriracha or chipotle adobo to the horseradish cream for smoky heat that complements the beef.
open facedOpen-faced
Pile the roast beef and vegetables on a single toasted slice, then broil for 1 minute with a slice of provolone on top for a warm, melty variation.
herbaceousHerbaceous
Mix 1 tablespoon of chopped fresh chives or dill into the horseradish cream for a bright, garden-fresh twist.
Why this is on our healthy list.
Lean Protein Source
Beef eye of round is one of the leanest cuts, providing high-quality protein that supports muscle repair and satiety.
Rich in Iron
Red meat is a natural source of heme iron, which is easily absorbed and essential for healthy blood oxygen transport.
Probiotic Boost from Sour Cream
The live cultures in sour cream support gut health, though pasteurization may reduce their activity.
Vitamin C from Fresh Vegetables
Tomatoes and lettuce contribute vitamin C and antioxidants, helping immune function and skin health.
Frequently asked questions
Yes, top round or sirloin work well; just slice them very thinly across the grain after roasting to medium-rare.
