Should you use butter or oil for caramelizing onions?

The taste of butter is much more savory than oil for caramelizing onions. You want to cook onions low and slow, which means a high burning point oil isn't necessary. Because the heat of the pan is only at medium low, butter works really well for caramelizing.

Is there a difference between prepared horseradish and horseradish?

Yes! Prepared horseradish is a condiment which usually includes vinegar and sometimes sugar in the jar. Horseradish is a stronger form from the root of the horseradish plant. Use prepared horseradish for these roast beef sliders.

Roast Beef Sliders on Hawaiian Rolls

Name: Hot Roast Beef Sliders on Hawaiian Rolls
Prep time: 18 min
Cook time: 13 min
Total time: 30 min
Cuisine: american
Ingredients: 12 count Savory Butter King's Hawaiian Rolls; 1/2 lb Deli Roast Beef; 4 tablespoons butter, salted; 1 yellow sweet onion; 8 ounce cheddar cheese, shredded; 1/4 cup mayonnaise; 1 teaspoon prepared horseradish; 1/2 teaspoon sea salt; 1/4 teaspoon black pepper; 2 garlic cloves, minced; 2 teaspoons parsley, minced

Description

These Hot Roast Beef Sliders on Hawaiian Rolls are the best game day appetizer! They are layered with flavor and baked to perfection. Plus, these mini roast beef sandwiches only take about 30 minutes to make.

Ingredients

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12 count Savory Butter King's Hawaiian Rolls
1/2 lb Deli Roast Beef
4 tablespoons butter, salted
1 yellow sweet onion
8 ounce cheddar cheese, shredded
1/4 cup mayonnaise
1 teaspoon prepared horseradish
1/2 teaspoon sea salt
1/4 teaspoon black pepper
2 garlic cloves, minced
2 teaspoons parsley, minced

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Instructions

Preheat the oven to 350 degrees. Cut the onions into slices between 1/4 inch and 1/2 inch thick. Try to get similar thickness on them, so that they cook evenly.
Into a large Stainless Steel Skillet over medium low heat, melt 2 tablespoons of butter. Toss in the onions and salt and break them up with a wooden spoon. Cover and cook for 4 minutes. Take off the cover and cook for an additional 10 to 12 minutes, stirring every few minutes. If the onions start to brown, turn down the heat.
While the onions are caramelizing, prepare the sauce. Into a small bowl, whisk together the mayonnaise, prepared horseradish and black pepper. Set aside.
After about 15 minutes, the caramelized onions should be complete. Place them into a bowl with the remaining butter in the pan.
Slice halfway between the Kings Hawaiian Rolls to create a top and bottom layer. Add all the roast beef on the bottom layer. Spread the Horseradish Aioli on the top half.
Next, add the caramelized onion, then the cheddar cheese over the roast beef.
Place the top half over the bottom half and bake on a cookie sheet for 13 minutes.
While the sliders are baking, heat a small skillet over medium low heat. Add in the remaining 2 tablespoons of butter and melt. Toss in the garlic, and cook for 1 to 2 minutes, stirring throughout to avoid burning. Transfer to a bowl.
Once the roast beef sliders come out of the oven, brush with garlic butter and top with fresh parsley. Cut with a large knife into individual sliders and enjoy!

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Notes

Don't cut the onions too skinny. I find that a cut between 1/4 inch and 1/2 inch is best for caramelizing onions. If they are too thick, they won't caramelize, but too thin and they will burn.

When caramelizing the onions, it's really important to cook them low and slow. This allows the natural sugars to release from the onions and it will produce a really nice deep flavor.

Be sure to keep a close eye on the garlic when cooking it in the butter. It toasts really quickly.

Prep Time: 18 minutes
Cook Time: 13 minutes
Category: appetizer
Method: baked
Cuisine: american