Roast Garlic Mushroom Thyme

Featured in: Cozy Home Dinners

This savory sandwich combines the deep flavors of roasted garlic and golden sautéed mushrooms infused with fresh thyme. Melted Gruyère and mozzarella cheese layered on sourdough bread create a rich, gooey texture, complemented by a crisp, buttery exterior from the skillet grilling. Perfect for a quick and flavorful meal with a balance of earthy and creamy notes.

Updated on Fri, 28 Nov 2025 11:32:00 GMT
Golden, bubbly Roast Garlic Mushroom & Thyme Grilled Cheese, oozing melted Gruyère, a perfect comfort meal. Save
Golden, bubbly Roast Garlic Mushroom & Thyme Grilled Cheese, oozing melted Gruyère, a perfect comfort meal. | poppyhearth.com

A decadent grilled cheese sandwich featuring savory roasted garlic, sautéed mushrooms, fresh thyme, and gooey melted cheese on crispy golden bread.

This recipe combines bold flavors with a comforting classic I have enjoyed making for family gatherings.

Ingredients

  • Garlic: 1 head
  • Mushrooms: 200 g (7 oz) cremini or button mushrooms, sliced
  • Onion: 1 small yellow onion, thinly sliced
  • Thyme: 2 tbsp fresh thyme leaves (or 1 tsp dried)
  • Gruyère cheese: 120 g (4 oz), grated
  • Mozzarella cheese: 120 g (4 oz), grated
  • Unsalted butter: 2 tbsp, softened
  • Bread: 4 slices sourdough or country bread
  • Olive oil: 2 tbsp
  • Salt and freshly ground black pepper: to taste

Instructions

Step 1:
Preheat oven to 200°C (400°F). Slice the top off the garlic head, drizzle with 1 tsp olive oil, wrap in foil, and roast for 25 30 minutes until soft. Squeeze out the cloves and mash into a paste set aside.
Step 2:
Heat 1 tbsp olive oil in a skillet over medium heat. Add the onions and cook for 2 3 minutes until softened. Add mushrooms and thyme, season with salt and pepper, and sauté for 6 8 minutes until mushrooms are golden and any liquid has evaporated. Transfer to a plate.
Step 3:
Spread roasted garlic paste evenly onto one side of each bread slice.
Step 4:
Layer half the cheese mixture on two slices of bread (garlic side up), top with the mushroom mixture, then the remaining cheese. Cover with the remaining bread slices, garlic side down.
Step 5:
Spread butter on the outside of each sandwich.
Step 6:
Heat a clean skillet over medium low. Grill sandwiches 3 4 minutes per side, pressing gently, until bread is golden and cheese is melted.
Step 7:
Slice and serve hot.
Sizzling skillet showing a crispy Roast Garlic Mushroom & Thyme Grilled Cheese, ready to be devoured with its golden crust. Save
Sizzling skillet showing a crispy Roast Garlic Mushroom & Thyme Grilled Cheese, ready to be devoured with its golden crust. | poppyhearth.com

My family always gathers around this sandwich on chilly evenings for a warm comforting meal together.

Notes

For extra flavor, add a splash of balsamic vinegar to the mushrooms while sautéing. Swiss or Fontina cheese work well as substitutes. Serve with a simple green salad or tomato soup.

Required Tools

Oven, skillet, knife, cutting board, cheese grater, foil

Nutritional Information

Calories: 480 Total Fat: 27 g Carbohydrates: 38 g Protein: 21 g per serving

Freshly grilled Roast Garlic Mushroom & Thyme Grilled Cheese served with a side of tomato soup – a delicious, hearty lunch. Save
Freshly grilled Roast Garlic Mushroom & Thyme Grilled Cheese served with a side of tomato soup – a delicious, hearty lunch. | poppyhearth.com

This sandwich brings together rich roasted garlic and melty cheese for the perfect cozy meal.

Recipe Questions

How do I roast garlic for this dish?

Slice the top off a garlic head, drizzle with olive oil, wrap in foil, and roast at 200°C for 25-30 minutes until soft. Then squeeze out the cloves and mash into a paste.

What mushrooms work best here?

Cremini or button mushrooms are ideal as they sauté well and offer a mild, earthy flavor complementing the garlic and thyme.

Can I substitute the cheeses used?

Swiss or Fontina cheeses are excellent alternatives and melt smoothly, maintaining the sandwich's creamy texture.

How do I ensure the bread stays crispy?

Spread softened butter on the outside of the sandwich slices and grill over medium-low heat until golden and crisp on both sides.

What enhancements can I add while cooking the mushrooms?

A splash of balsamic vinegar brightens the mushrooms' flavor during sautéing, adding subtle acidity and depth.

Roast Garlic Mushroom Thyme

Decadent sandwich featuring roasted garlic, sautéed mushrooms, fresh thyme, and melted cheese on crispy bread.

Prep duration
15 minutes
Cooking duration
20 minutes
Total duration
35 minutes
Created by Grace Holloway

Recipe type Cozy Home Dinners

Skill level Easy

Cuisine type American

Makes 2 Portions

Dietary details Meat-free

Required Ingredients

Vegetables

01 1 head garlic
02 7 oz cremini or button mushrooms, sliced
03 1 small yellow onion, thinly sliced
04 2 tbsp fresh thyme leaves

Dairy

01 4 oz Gruyère cheese, grated
02 4 oz mozzarella cheese, grated
03 2 tbsp unsalted butter, softened

Bread

01 4 slices sourdough or country bread

Condiments & Seasonings

01 2 tbsp olive oil
02 Salt and freshly ground black pepper, to taste

How-To Steps

Step 01

Roast garlic: Preheat oven to 400°F. Slice the top off the garlic head, drizzle with 1 tsp olive oil, wrap in foil, and roast for 25–30 minutes until soft. Squeeze out the cloves and mash into a paste; set aside.

Step 02

Sauté vegetables: Heat 1 tbsp olive oil in a skillet over medium heat. Cook onions 2–3 minutes until softened. Add mushrooms and thyme, season with salt and pepper, and sauté 6–8 minutes until mushrooms are golden and liquid has evaporated. Transfer to a plate.

Step 03

Assemble sandwiches: Spread roasted garlic paste evenly on one side of each bread slice. Layer half the cheese mixture on two slices (garlic side up), top with mushroom mixture, then remaining cheese. Cover with remaining bread slices, garlic side down.

Step 04

Butter sandwiches: Spread softened butter on the outside of each sandwich evenly.

Step 05

Grill sandwiches: Heat a clean skillet over medium-low heat. Grill sandwiches 3–4 minutes per side, pressing gently, until bread is golden and cheese is melted.

Step 06

Serve: Slice sandwiches and serve hot.

Tools needed

  • Oven
  • Skillet
  • Knife
  • Cutting board
  • Cheese grater
  • Foil

Allergy notices

Check ingredients for allergens. Reach out to your healthcare provider with any questions.
  • Contains dairy (cheese, butter) and wheat (bread). May contain gluten; verify labels if gluten-sensitive.

Nutrition breakdown (per portion)

These details are meant for general advice, not medical guidance.
  • Energy: 480
  • Fats: 27 g
  • Carbohydrates: 38 g
  • Proteins: 21 g