Ingredients
Equipment
Method
Step-by-Step Instructions
- Heat 2 tablespoons of oil in a skillet over medium heat and caramelize the onions for 15-20 minutes until golden brown.
- Slice the leftover prime rib as thinly as possible, aiming for 1/8 inch thickness.
- Mix 1/3 cup mayonnaise with 2 tablespoons of prepared horseradish in a small bowl to create horseradish mayo.
- Toast the rolls in a preheated oven at 350°F for 5-7 minutes until golden and slightly crispy.
- Spread horseradish mayo on each roll and layer with spring mix greens, sliced prime rib, and caramelized onions.
- Top the sandwiches with additional greens, close the rolls, and serve immediately.
Nutrition
Notes
Best enjoyed fresh for superior flavor and texture. Store in an airtight container for up to 2 days in the fridge or freeze for up to 1 month.
