The Grill Dads
Photo: Nathan Congleton / TODAYTri-Tip Steak Sandwich
With Caramelized Onions & Horseradish Cream Sauce


What You Need
Ingredients
For the caramelized onions:
- 014 jumbo yellow onions
- 02½ cup olive oil
- 034 tablespoons unsalted butter
- 041 teaspoon honey
- 05Kosher salt, for seasoning
For the horseradish cream sauce:
- 011 cup mayo
- 021 cup sour cream
- 03½ cup prepared horseradish
- 04¼ cup buttermilk
- 052 tablespoons lemon zest, from about 1 large lemon
- 06Dash Worcestershire sauce
- 07Salt and pepper, to taste
For the steak and sandwiches:
- 014 tablespoons ground coffee
- 022 heaping tablespoons light brown sugar
- 031 teaspoon cayenne pepper
- 041 teaspoon chipotle pepper
- 052 tablespoons granulated garlic
- 062 tablespoons smoked paprika
- 073 tablespoons kosher salt
- 082 tablespoons freshly ground black pepper
- 091 teaspoon cinnamon
- 102 pounds tri-tip, trimmed and sliverskin removed
- 118 French bread rolls, preferably New Orleans style
- 12Swiss cheese slices
- 131 bunch watercress
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