Tri Tip Sandwiches: A Juicy, Easy Steak Recipe

Tri tip sandwiches pair thin slices of California-associated tri tip roast with soft rolls, savory onions and a tangy horseradish sauce. The roast’s beefy flavor and firm texture make satisfying sandwiches, while slicing it across the grain keeps each bite tender; toppings and seasonings vary from cook to cook.

Ingredients

1 tri tip roast, about 2½–3 lb (1.1–1.36 kg), trimmed of thick surface fat
1 tbsp (15 ml) olive oil, plus 1 tsp (5 ml) for the onions
1½ tsp (9 g) kosher salt
1 tsp (2 g) coarsely ground black pepper
1 tsp (3 g) garlic powder
½ tsp (1 g) smoked paprika
2 medium yellow onions, thinly sliced, about 10½ oz (300 g)
1 tbsp (14 g) unsalted butter
1 tsp (5 ml) balsamic vinegar
½ cup (112 g) mayonnaise
1 tbsp (15 g) prepared horseradish, or more to taste
1 tsp (5 ml) Dijon mustard
1 tsp (5 ml) lemon juice
6 sandwich rolls, about 3 oz (85 g) each
6 slices provolone, about 4 oz (115 g) total, optional
2 cups (40 g) arugula, optional

Instructions

Warm the oven and prepare the roast. Set a rack in the center of the oven and heat it to 425°F (220°C). Pat the tri tip dry with paper towels so it browns rather than steams. If one end is noticeably thinner, tuck it under slightly and tie it with kitchen twine so the roast cooks more evenly. Mix the salt, pepper, garlic powder and smoked paprika, then rub the mixture over all sides of the beef. Allow about 20 minutes for this preparation; the roast does not need a long marinade.
Mix the sauce and prepare the onions. Stir together the mayonnaise, horseradish, Dijon and lemon juice in a small bowl. Taste and add another teaspoon of horseradish if you want a sharper sauce. Set aside in the refrigerator. Slice the onions thinly and keep them ready beside the stove. Making the sauce now gives its flavors time to mingle while the beef cooks.
Sear the tri tip. Heat a large oven-safe skillet over medium-high heat. Add 1 tablespoon olive oil; when it shimmers, lay in the roast. Sear for about 3 minutes on each broad side and 1–2 minutes on the narrow edges, turning with tongs. The outside should develop a deep brown crust. If the skillet is not oven-safe, transfer the seared roast to a small roasting pan.
Roast to a safe temperature. Place the skillet or pan in the oven and roast for about 18–25 minutes, checking early because thickness and starting temperature affect the timing. Insert an instant-read food thermometer into the thickest part, away from the pan. USDA FSIS lists 145°F (63°C) with a 3-minute rest as the safe minimum for whole cuts of beef; cook until the center reaches at least that temperature. If it has not reached 145°F (63°C), return it to the oven and check again after a few minutes. The total cooking time, including searing, is about 35 minutes, but temperature—not the clock—determines doneness.
Cook the onions while the beef roasts. Meanwhile, melt the butter with 1 teaspoon olive oil in a skillet over medium-low heat. Add the onions and a small pinch of salt. Cook for 15–20 minutes, stirring every few minutes, until soft and golden. Lower the heat if the edges brown before the slices soften. Stir in the balsamic vinegar for the final minute, then take the pan off the heat.
Rest and slice the beef. Transfer the cooked roast to a cutting board and let it rest for 15 minutes; this also exceeds the required 3-minute safety rest. Use that time to warm the rolls, cut side down in a dry skillet or in the oven for 2–3 minutes. Find the direction of the muscle fibers, which can change direction near the center of a tri tip. Cut the roast into sections if needed, then slice each section thinly across the grain. Keep the slices together with any resting juices.
Build the sandwiches. Spread horseradish sauce over the cut sides of the rolls. Divide the sliced beef among the six bottoms and spoon the onions over it. Add provolone and arugula if using, then close with the tops. For melted cheese, place the cheese on the warm beef and cover the skillet briefly, or set the open sandwiches under a broiler for a short time, watching closely. Serve while warm, with extra sauce on the side.

Tips

Use a thermometer, not color alone. A browned exterior does not tell you whether the center has reached a safe temperature. Check the thickest section, and avoid touching the skillet with the probe. Since tri tip is irregular, check a second spot if one end is much thicker than the other.
Slice across the grain in each section. Tri tip’s grain often turns near the middle, so a single slicing direction may not work for the whole roast. Look for the long muscle lines and rotate the roast as they change. Thin slices, about ⅛ inch (3 mm), are especially easy to eat in a sandwich.
Adjust the sauce to your horseradish. Prepared horseradish varies in heat and moisture. Start with 1 tablespoon, taste, then add more gradually. If you cannot find it, use 1–2 teaspoons (5–10 g) of prepared creamy horseradish sauce instead; the result will be milder and may need less mayonnaise.
Keep the bread from getting soggy. Toast the cut sides and spread sauce on the bread rather than pouring it over the meat. If assembling ahead, store the roast, rolls, onions and sauce separately and put the sandwiches together just before serving.

Serving Suggestions

Serve the sandwiches hot with crisp, acidic or lightly seasoned sides to balance the rich beef and creamy sauce. A simple green salad with a sharp vinaigrette, vinegar-based slaw, dill pickles or sliced pepperoncini all work well. For a heartier meal, add oven fries, potato wedges, roasted potatoes or a bowl of tomato soup. Keep extra horseradish sauce on the table so people can adjust the heat themselves.

For a casual gathering, slice the roast and arrange it on a platter with the rolls, onions, cheese, greens and sauce in separate bowls. Guests can assemble their own sandwiches, and the bread stays fresher while everyone eats. If serving the beef family-style, include a spoon for the resting juices and drizzle a little over the sliced meat just before it goes to the table.

Variations

Santa Maria-inspired seasoning: Replace the smoked paprika with 1 teaspoon (2 g) dried oregano and add ½ teaspoon (1 g) dried rosemary. Tri tip is closely associated with California’s Santa Maria-style barbecue, though sandwich toppings and methods vary. This seasoning leans herbaceous rather than smoky; it is a practical oven-roasted take rather than a claim to one definitive regional version.

Cheese and pepper sandwich: Use provolone, pepper jack or Monterey Jack, then add roasted red peppers or sautéed bell peppers. Pepper jack gives the sandwich more heat, while provolone is mild and melts smoothly. For a dairy-free version, omit the butter and cheese, sauté the onions in olive oil, and use a mayonnaise that suits your dietary needs.

Different roll or sauce: Hoagie rolls, ciabatta rolls or sturdy sourdough can stand in for soft sandwich rolls. A crusty loaf gives more chew and can be harder to bite through, so slice the beef especially thinly. If you do not want horseradish, mix the mayonnaise with Dijon and a little extra lemon for a mild, tangy spread.

Storage and Reheating

Refrigerate cooked beef and onions within 2 hours of cooking, storing them in shallow, covered containers. They keep for 3–4 days in the refrigerator. Keep the sauce in a separate covered container and use it within about 4 days, or follow the date on the mayonnaise and horseradish packaging if that is sooner. Store rolls at room temperature if you will eat them within a day or two, following the package directions.

For the best texture, store the meat, onions, sauce and bread separately rather than refrigerating assembled sandwiches. Reheat only the amount of beef you plan to eat. Warm it gently in a covered skillet with a spoonful of water or reserved juices, or microwave it in short bursts, stirring or rearranging the slices so they heat evenly. USDA FSIS advises reheating leftovers to 165°F (74°C); check with a food thermometer. Reheated beef will cook further and may be less pink and tender than freshly sliced beef. Freeze the cooked beef and onions in airtight freezer-safe containers for up to 2–3 months for best quality, then thaw in the refrigerator before reheating.

Frequently Asked Questions

What is tri tip?
Tri tip is a triangular cut from the bottom sirloin of a beef carcass. It is commonly sold as a small roast and is known for a robust beef flavor. The grain changes direction in the roast, which is why it helps to identify the fibers and slice across them after cooking.

Can I cook the tri tip on a grill instead?
Yes. Set up a two-zone grill with a hot side for searing and a cooler side for indirect cooking. Sear the roast over direct heat, then move it to indirect heat and close the lid until a thermometer in the thickest section reads at least 145°F (63°C). Timing varies with the grill and the roast’s thickness, so use temperature as your guide and rest the meat before slicing.

Can I make the roast ahead of time?
Yes. Cook and slice it, cool it promptly, and refrigerate it within 2 hours in a covered container. Reheat the slices gently to 165°F (74°C) before serving. For easier preparation, you can also make the sauce and cook the onions a day ahead; keep both refrigerated and warm the onions before assembling.

Why is my tri tip tough?
The most common causes are slicing with the grain, cutting thick slices or cooking the meat well beyond the temperature you intended. Tri tip has more than one grain direction, so turn the roast as needed when slicing. A sharp knife and thin slices help, and a thermometer makes it easier to avoid overshooting the recipe’s safe minimum temperature.

What can I use instead of tri tip?
A small sirloin roast is a useful substitute if tri tip is unavailable; cook it by thickness and thermometer reading, then slice thinly across the grain. Top sirloin steak can also work, though it may cook more quickly and yield less meat. The flavor and texture will differ somewhat, so begin checking the temperature early.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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