Go Back

Garlicky Herbed Rolls with Caramelized Onions + Mushrooms

A garlicky herbed butter spread on soft and fluffy sweet rolls, with caramelized onions AND caramelized mushrooms. Baked in the oven until the cheese is melty.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 1 hour 25 minutes
Total Time 1 hour 45 minutes
Course Appetizer, Side Dish
Cuisine Western
Servings 12 sliders

Ingredients
  

Roasted Garlic

  • 4 heads of garlic
  • 1 tbsp olive oil

Garlicky Herbed Butter

  • Roasted garlic (from above)
  • 3 tbsp unsalted butter (melted)
  • 1 tbsp fresh sage (chopped)
  • 2 tsp dried basil
  • 1 tsp dried oregano
  • 1 tsp dried parsley
  • Pinch of chili flakes
  • Salt & Pepper

Caramelized Onions + Mushrooms

  • 2 medium yellow onions (thinly sliced)
  • Salt & Pepper to taste
  • ½ tsp sugar
  • A little water (to keep onions from drying out when cooking)
  • 1 tbsp balsamic vinegar
  • 2 tbsp salted butter
  • 1 lb mixed mushrooms (roughly chopped)
  • 1 tbsp fresh thyme (chopped)
  • 1 tbsp fresh sage (chopped)

Assembling

  • 1 package King's Hawaiian Original Sweet Rolls (halved lengthwise)
  • Garlicky Herbed Butter (from above)
  • Caramelized Onions + Mushrooms (from above)
  • 1 cup shredded mozzarella cheese

Instructions
 

Roasted Garlic

  • Preheat the oven to 400°F.
  • Chop off the top of each head of garlic. Place in foil and drizzle 1 tbsp of olive oil on top of the garlic heads. Wrap into a ball and roast in the oven for 50 minutes.

Garlicky Herbed Butter

  • To make the garlicky herbed butter:
    In a bowl, mix the melted unsalted butter with 1 tbsp sage, basil, oregano, parsley and chili flakes. Season with salt & pepper.
    Mash the baked garlic cloves into the butter using a fork. Mix until combined and smooth.

Caramelized Onions + Mushrooms

  • Heat the remaining olive oil in a large skillet over medium-high heat.
    Add in the onions and season with salt, stirring occasionally until softened.
    After 10 minutes, add in the sugar to help with the caramelization process. To prevent the onions from drying out when cooking, add a little water. At this point, add in the balsamic vinegar. Cook for another 5-10 minutes, or until the onions are golden and caramelized. Set aside.
  • Using the same skillet, melt the salted butter and cook the mushrooms. Season with pepper. Cook undisturbed for 5 minutes.
    Add in the thyme and the remaining 1 tbsp sage, stir and continue cooking until the mushrooms have caramelized (about 3-5 minutes). Set aside.

Assembling

  • Preheat the oven to 350°F.
  • Brush the garlicky herbed butter over the bottom half of the rolls. add on the caramelized onions, followed by the caramelized mushrooms, and top with shredded mozzarella cheese.
    Cover with the top half of the rolls. Brush another layer of the garlicky herbed butter on the top.
    Cover the top with foil (this will prevent the top from burning), and bake in the oven for 10-15 minutes, or until the cheese has melted. During the final few minutes, remove the foil and bake until the top is slightly crispy. Enjoy!