Caramelized Onion Apple Cheddar

Featured in: Smoky Sandwiches & Burgers

This dish features golden, buttery bread filled with sweet caramelized onions, juicy apple slices, and sharp cheddar melted to perfection. The onions are slowly cooked to deepen their natural sweetness, complementing the tartness and crunch of fresh apple slices. Together, these ingredients create a rich balance of textures and flavors, ideal for a quick yet satisfying meal. Cooking involves toasting the sandwich until the bread is golden and cheese is gooey, yielding a delicious blend of savory and sweet notes in every bite.

Updated on Fri, 28 Nov 2025 10:19:00 GMT
Golden-brown Caramelized Onion, Apple & Cheddar Grilled Cheese, perfectly melted and ready to enjoy. Save
Golden-brown Caramelized Onion, Apple & Cheddar Grilled Cheese, perfectly melted and ready to enjoy. | grilto.com

A gourmet twist on the classic grilled cheese, featuring sweet caramelized onions, crisp apple slices, and sharp cheddar, all melted between golden, buttery bread.

I first served this sandwich to friends and was amazed at how the flavors combined into a perfect balance of savory and sweet.

Ingredients

  • Caramelized Onions: 1 large yellow onion thinly sliced, 1 tablespoon unsalted butter, 1 teaspoon olive oil, 1/2 teaspoon salt, 1/2 teaspoon sugar (optional for extra sweetness)
  • Sandwich: 4 slices sourdough or country bread, 2 tablespoons unsalted butter softened for spreading, 1 medium crisp apple such as Granny Smith or Honeycrisp thinly sliced, 120 g (4 oz) sharp cheddar cheese sliced or shredded, freshly ground black pepper to taste

Instructions

Prepare the caramelized onions:
In a skillet over medium-low heat melt 1 tablespoon butter with olive oil Add sliced onion and salt Cook stirring often for 15 to 18 minutes until onions are deeply golden and soft If desired add sugar halfway through for extra sweetness Set aside
Assemble the sandwiches:
Lay out the bread slices Spread butter on one side of each slice On the unbuttered side layer half the cheddar followed by a layer of caramelized onions apple slices a pinch of black pepper and the remaining cheddar Top with the second slice of bread buttered side facing out
Cook the grilled cheese:
Heat a nonstick skillet or griddle over medium heat Place sandwiches in the skillet and cook for 3 to 4 minutes per side pressing gently until bread is golden brown and cheese is melted Reduce heat if bread browns too quickly
Remove from heat:
Let cool for 1 to 2 minutes then slice and serve warm
Warm, gooey Caramelized Onion, Apple & Cheddar Grilled Cheese with visible apple slices and cheese pull. Save
Warm, gooey Caramelized Onion, Apple & Cheddar Grilled Cheese with visible apple slices and cheese pull. | grilto.com

This sandwich always brings my family together for a cozy meal filled with smiles and satisfaction.

Required Tools

Skillet or nonstick pan Spatula Knife Cutting board

Allergen Information

Contains Dairy (butter cheese) Wheat (bread) May contain Gluten (bread) Double-check bread and cheese labels for potential allergens

Nutritional Information

Calories 470 Total Fat 26 g Carbohydrates 43 g Protein 18 g

Buttery, toasted slices embracing a delicious Caramelized Onion, Apple & Cheddar Grilled Cheese sandwich. Save
Buttery, toasted slices embracing a delicious Caramelized Onion, Apple & Cheddar Grilled Cheese sandwich. | grilto.com

Enjoy this elevated grilled cheese perfect for a quick gourmet meal or a comforting snack any time.

Recipe Help & Answers

How do I properly caramelize the onions?

Cook sliced onions slowly over medium-low heat with butter and olive oil, stirring often for 15–18 minutes until soft and golden brown.

What type of apple works best?

Crisp, tart apples like Granny Smith or sweet varieties such as Honeycrisp provide a nice contrast to the rich cheddar and onions.

Can I substitute the cheddar cheese?

Gruyère or fontina cheeses can be used for a different flavor profile while maintaining a creamy melt.

What bread is recommended for this dish?

Sourdough or country bread slices work well, offering a sturdy base and crisp texture once toasted.

Any tips for adding extra flavor?

Adding a thin layer of Dijon mustard to the bread or some fresh baby arugula provides a peppery kick and fresh balance.

Caramelized Onion Apple Cheddar

Golden bread layered with caramelized onions, crisp apple, and sharp cheddar cheese for a flavorful delight.

Prep Time
15 min
Time to Cook
25 min
Complete Time
40 min
From grilto Jake Turner


Skill Level Easy

Cuisine Style American

Serves 2 Portions

Diet Details Meatless

What You Need

Caramelized Onions

01 1 large yellow onion, thinly sliced
02 1 tablespoon unsalted butter
03 1 teaspoon olive oil
04 1/2 teaspoon salt
05 1/2 teaspoon sugar (optional)

Sandwich

01 4 slices sourdough or country bread
02 2 tablespoons unsalted butter, softened
03 1 medium crisp apple (e.g., Granny Smith), thinly sliced
04 4 ounces sharp cheddar cheese, sliced or shredded
05 Freshly ground black pepper, to taste

How-To

Step 01

Caramelize Onions: Melt butter with olive oil in a skillet over medium-low heat. Add sliced onions and salt. Cook, stirring frequently, for 15 to 18 minutes until deeply golden and soft. Optionally, stir in sugar halfway through cooking for added sweetness. Remove from heat and set aside.

Step 02

Assemble Sandwiches: Lay out bread slices and spread softened butter on one side of each. On the unbuttered sides, layer half the cheddar cheese, followed by caramelized onions, apple slices, a pinch of black pepper, and the remaining cheddar. Top with the second slice of bread, buttered side out.

Step 03

Cook Sandwiches: Heat a nonstick skillet or griddle over medium heat. Place sandwiches in the skillet and cook 3 to 4 minutes per side, pressing gently, until bread is golden and cheese is melted. Lower heat if bread browns too quickly.

Step 04

Rest and Serve: Remove sandwiches from heat. Let rest for 1 to 2 minutes, then slice and serve warm.

Essentials

  • Skillet or nonstick pan
  • Spatula
  • Knife
  • Cutting board

Allergy Advisory

Review every component for allergens. Reach out to a health pro if you’re concerned.
  • Contains dairy and wheat; may contain gluten. Verify bread and cheese labels for potential allergens.

Nutrition Details (per portion)

Facts listed here are for your info, not medical advice. Always double-check if needed.
  • Energy: 470
  • Lipids: 26 g
  • Carbohydrates: 43 g
  • Proteins: 18 g