Q1: Can I make these French Onion Sliders ahead of time?

Yes, you can prepare the beef and onion mixture a day in advance and refrigerate it. Assemble the sliders and bake them just before serving for the best texture.

Q2: What cheese works best if I don’t have Gruyere?

If Gruyere isn’t available, Swiss is the closest substitute. Provolone or a mix of mozzarella and parmesan also works well for a similar melt and mild flavor.

Q3: How can I keep the slider buns from getting soggy?

To prevent soggy buns, drain excess grease from the beef mixture and avoid over-saturating the buns with butter. Toasting the bottom buns slightly before assembling can also help.

Q4: Can I freeze these sliders?

Yes, assemble the sliders without baking, wrap them tightly, and freeze. When ready to eat, thaw in the refrigerator and bake until heated through and golden.

French Onion Sliders with Gruyere and Caramelized Onions

Name: French Onion Sliders with Gruyere and Caramelized Onions
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: American
Ingredients: 2 large sweet onions, sliced; 2 pounds ground beef; 24 slider buns; 12–16 ounces Gruyere cheese, shredded; 8 tablespoons (1 stick) unsalted butter, divided; 2 tablespoons beef base (like Better than Bouillon), divided; 1 tablespoon Worcestershire sauce, divided; Kosher salt and black pepper, to taste; 2 tablespoons sesame seeds; 1 tablespoon fresh thyme; 1 teaspoon onion powder; 1 teaspoon garlic powder

Description

Easy French Onion Sliders made with caramelized onions, savory beef, melted Gruyere, and buttery slider buns—perfect for beginner cooks.

Ingredients

Scale

2 large sweet onions, sliced
2 pounds ground beef
24 slider buns
12–16 ounces Gruyere cheese, shredded
8 tablespoons (1 stick) unsalted butter, divided
2 tablespoons beef base (like Better than Bouillon), divided
1 tablespoon Worcestershire sauce, divided
Kosher salt and black pepper, to taste
2 tablespoons sesame seeds
1 tablespoon fresh thyme
1 teaspoon onion powder
1 teaspoon garlic powder

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Instructions

Slice the onions and sauté them in 2 tablespoons of butter over medium-low heat for 25–30 minutes until golden and caramelized, stirring occasionally.
In a bowl, mix the ground beef with half the beef base and Worcestershire sauce. Season with salt and pepper, then add to the skillet with onions and cook over medium-high heat until browned. Drain excess grease.
Preheat oven to 350°F. Grease a large sheet pan. Slice slider buns and place the bottoms tightly on the sheet.
Evenly distribute the beef and onion mixture over the bottom buns. Top with shredded Gruyere cheese and place top buns over the cheese.
Melt the remaining butter in a bowl, then stir in the remaining beef base and Worcestershire sauce. Brush over the top buns.
Sprinkle with sesame seeds, fresh thyme, garlic powder, and onion powder. Bake for 20 minutes until cheese is melted and tops are golden.
Let cool slightly, then serve warm.

Notes

Use low-sodium beef base and unsalted butter to reduce saltiness.
Prep the beef and onion mixture ahead and refrigerate for convenience.
Substitute Gruyere with Swiss or provolone for affordability.
Drain grease well to prevent soggy buns.
Toast bottom buns slightly to maintain texture.

Prep Time: 20 minutes
Cook Time: 40 minutes
Category: Main Dish
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 slider
Calories: 260
Sugar: 3g
Sodium: 430mg
Fat: 17g
Saturated Fat: 8g
Unsaturated Fat: 7g
Trans Fat: 0g
Carbohydrates: 14g
Fiber: 1g
Protein: 13g
Cholesterol: 45mg