Tri-Tip Roast Sandwich (Slow Cooked)

Servings: 6

Ready In: 1 hour 30 minutes

Perfect For: Lunch or Dinner

About this recipe

This tri-tip sandwich recipe is easy, flavorful, and perfect for family dinners or casual gatherings. The prep is simple, most of the time is hands-off while the meat slow cooks on the grill. For the best flavor, don’t skip the horseradish sauce!

Ingredients

For the sandwiches:

1 (2–3 lb) tri-tip roast (from Don’s Meat Shop)
6 sandwich rolls
6 slices provolone cheese (or your favorite)
3–6 tablespoons horseradish sauce (see below)
2 tablespoons softened butter
Salt and pepper to taste

For the Horseradish Sauce:

2 tablespoons horseradish
2 tablespoons mayonnaise

NOTE: Add more horseradish if you want it hotter (and to potentially clear any sinus issues you may be having!)

Instructions:

Step 1 – Prep the Grill:
- Bring your grill to 250°F using indirect heat for slow cooking.
Step 2 – Season & Cook the Tri-Tip:
- Generously season the tri-tip with salt and pepper.
- Place it on the grill, close the lid, and cook for 45 minutes.
- Flip, check internal temp, and continue cooking until desired doneness is reached (see chart below).
- Remove from grill and let rest for 10–15 minutes.
Step 3 – Make the Horseradish Sauce
- While the roast cooks, mix horseradish and mayonnaise in a small bowl.
- Refrigerate until ready to use.
Step 4 – Toast the Rolls
- Slice the rolls in half and butter the inside of each.
- Toast until golden brown.
Step 5 – Assemble the Sandwiches
- Thinly slice the tri-tip against the grain.
- Spread horseradish sauce on the toasted rolls, top with sliced beef and cheese.
Step 6 – Serve & Enjoy
- Serve warm with your favorite sides like steak fries, coleslaw, or roasted vegetables.