Roast Beef & Caramelized Onion Panini with Avo Horseradish Sauce

Sandwiches, Burgers & Wraps

Roast Beef & Caramelized Onion Panini with Avo Horseradish Sauce

If you are singing the roast beef blues, try adding caramelized onions, Swiss cheese and an avocado horseradish sauce to get your tastebuds doing the tasty dance!


  • 8 ea. slices rye bread
  • 8 ea. thick slices Swiss cheese
  • 1 lb. thick-sliced roast beef
  • 2 c. caramelized onions
  • 1 ea. Avocados From Mexico, halved
  • 2/3 c. prepared horseradish
  • 4 T. melted butter
  • 1 t. white wine vinegar
  • 1/8 t. kosher salt


  1. Prepare sauce: in a medium bowl, mash the avocado into a chunky paste. Stir in horseradish, white wine vinegar and salt and mix until well combined and smooth.
  2. Warm a griddle over medium heat.
  3. As griddle heats, assemble the sandwiches. Evenly distribute the avocado horseradish on each slice of bread. On 4 of the slices of bread, add 1/4 of the roast beef, 1/2 cup caramelized onions and 2 slices Swiss cheese. Top with another piece of rye.
  4. In a bowl, heat butter in microwave until melted, approximately 20-30 seconds. Brush outsides of each sandwich with melted butter and place on hot griddle. Grill and press down for 3 to 4 minutes until golden brown, then flip and repeat until both sides are well toasted and cheese is melted. Cook 2 sandwiches at a time if griddle is large enough, then repeat.
  5. Slice sandwiches in half and serve with any remaining avocado horseradish sauce for dipping.


Nutrition Facts
Roast Beef & Caramelized Onion Panini with Avo Horseradish Sauce
Amount Per Serving 4
Calories 960 Calories from Fat 0
% Daily Value*
Total Fat 53g 68%
Saturated Fat 22g 110%
Trans Fat 1g  
Polyunsaturated Fat 0g  
Monounsaturated Fat 0g  
Cholesterol 165mg 54%
Sodium 880mg 38%
Total Carbohydrates 63g 23%
Dietary Fiber 12g 42%
Total Sugars 11g  
  Includes 0g Added Sugars 0%
Protein 56g 0%
Vitamin A 0mg 0%
Vitamin C 0mg 0%
Vitamin D 0mg 0%
Calcium 0mg 30%
Iron 0mg 40%
Potassium 1040mg 68%
* Percent Daily Values are based on a 2000 calorie diet.

Did you know the avocado is a fruit, not a vegetable? Learn more about the amazing avocado, including its rich history, cultural impact and tasty ways to eat this delicious superfood in guacamole as well as other dishes!

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