4.8 from 33 votes
Roast Beef Sliders with Caramelized Onions
Roast beef sliders piled high with cheese, caramelized onions and garlic bread buns! A quick 30 minutes dish that you will be making over and over. Perfect for entertaining as appetizers or a main course for a weeknight dinner, these are always a fan favorite and crowd pleaser.
Prep Time
10 mins
Cook Time
10 mins
Total Time
30 mins
Servings: 12 Sliders
Calories: 238 kcal
Course:
Main Course , Appetizer
Cuisine:
American
Ingredients
- 12 slider rolls (King’s Hawaiian, or dinner rolls or slider buns)
- 1 ½ pound deli roast beef (thinly sliced or shaved)
- 4-6 lices white cheese (ex. Havarti, Provolone, Swiss cheese,)
Caramelized Onions
- 3 tablespoon butter
- 4 large onions (sliced)
- 2 cloves garlic (finely minced)
- 1 tablespoon fresh Rosemary (chopped, or ½ tablespoon dried rosemary)
Garlic Butter
- ¼ cup butter (melted)
- 1 teaspoon mustard powder
- 1 teaspoon garlic powder
- 1 tablespoon parsley (chopped, or ½ tablespoon dried parsley)
Instructions
- Preheat oven to 350°F
- For the caramelized onions, in a large frying pan on medium heat, melt the 3 tablespoons of butter. Add the onions and cook on low for about 10-12 minutes until just starting to brown, stirring often.
- Once the onions start to brown, add in the minced garlic and rosemary. Continue cooking for about 5 minutes or until the onions are caramelized and golden brown in color. Remove the pan from the heat and set aside.
- Line a sheet pan or baking tray with parchment paper. Place the slider buns on top and cut them through the center. Set the tops of the buns to the side.
- Assemble the sliders by first layering the roast beef on the bottoms of the buns.
- Then add a layer of sliced cheese on top of the roast beef. Depending on the size of the slices of cheese, add 4 – 6 slices, or more to cover the roast beef.
- Evenly distribute the caramelized onions over top of the cheese.
- Place the slider bun tops back on.
- Prepare the garlic butter in a small bowl by mixing together the melted butter, mustard powder, garlic powder and parsley. Stir until evenly combined.
- Use a brush to spread the garlic butter over top of the slider buns. Brush garlic butter on the sides of the slider buns too.
- Transfer the sliders to the preheated oven and bake for about 5-8 minutes, or until the cheese has melted and the buns are toasted.
- Remove the sliders from the oven and allow to cool for 2-3 minutes. You can pull the sliders apart or use a knife to slice the sliders apart. Serve and enjoy!
Cup of Yum
Nutrition Information
Calories
238kcal
(12%)
Carbohydrates
22g
(7%)
Protein
16g
(32%)
Fat
10g
(15%)
Saturated Fat
5g
(25%)
Polyunsaturated Fat
0.4g
Monounsaturated Fat
3g
Trans Fat
0.3g
Cholesterol
50mg
(17%)
Sodium
912mg
(38%)
Potassium
243mg
(7%)
Fiber
2g
(8%)
Sugar
5g
(10%)
Vitamin A
240IU
(5%)
Vitamin C
30mg
(33%)
Calcium
199mg
(20%)
Iron
2mg
(11%)
Nutrition Facts
Serving: 12Sliders
Amount Per Serving
Calories 238
% Daily Value*
| Calories | 238kcal | 12% |
| Carbohydrates | 22g | 7% |
| Protein | 16g | 32% |
| Fat | 10g | 15% |
| Saturated Fat | 5g | 25% |
| Polyunsaturated Fat | 0.4g | 2% |
| Monounsaturated Fat | 3g | 15% |
| Trans Fat | 0.3g | 15% |
| Cholesterol | 50mg | 17% |
| Sodium | 912mg | 38% |
| Potassium | 243mg | 5% |
| Fiber | 2g | 8% |
| Sugar | 5g | 10% |
| Vitamin A | 240IU | 5% |
| Vitamin C | 30mg | 33% |
| Calcium | 199mg | 20% |
| Iron | 2mg | 11% |
* Percent Daily Values are based on a 2,000 calorie diet.