Caramelized Onion Apple Cheddar

Featured in: Fun Weeknight Dinners

This grilled sandwich combines deeply caramelized onions with crisp apple slices and sharp cheddar cheese. The onions are slowly cooked until golden and sweet, while the apples add a fresh, fruity crunch. Layers of cheddar cheese melt perfectly between slices of buttered sourdough bread, grilled to a crispy, golden finish. Simple seasonings and optional mustard enhance the flavor, delivering a balanced and satisfying meal in under an hour.

Updated on Fri, 28 Nov 2025 13:08:00 GMT
Golden brown Caramelized Onion, Apple & Cheddar Grilled Cheese, oozing with melted cheese and fresh apples. Save to Pinterest
Golden brown Caramelized Onion, Apple & Cheddar Grilled Cheese, oozing with melted cheese and fresh apples. | chomzo.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 made this grilled cheese as a comforting weekend lunch and it quickly became a family favorite

Ingredients

  • For the 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)
  • For the 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 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 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 2 minutes then slice and serve warm
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| chomzo.com

Our family enjoys making this recipe together especially on chilly afternoons creating warming memories

Tips for Perfect Caramelized Onions

Cook onions slowly and stir often to develop a rich sweet flavor without burning

Variations and Additions

Try adding baby arugula for peppery freshness or substitute Gruyère for a different cheese profile

Serving Suggestions

Serve with tomato soup or a crisp green salad for a balanced meal

This Caramelized Onion, Apple & Cheddar Grilled Cheese showcases layers of savory onions and sharp cheddar inside. Save to Pinterest
This Caramelized Onion, Apple & Cheddar Grilled Cheese showcases layers of savory onions and sharp cheddar inside. | chomzo.com

Enjoy this elevated grilled cheese as a quick satisfying meal any day of the week

Common Questions

How do I caramelize onions perfectly?

Slowly cook sliced onions in butter and olive oil over medium-low heat, stirring often, until deeply golden and soft—about 15-18 minutes.

Which apples work best for this sandwich?

Crisp varieties like Granny Smith or Honeycrisp provide a refreshing tartness that complements the sweet onions and rich cheese.

Can I use different cheese types?

Yes, cheeses like Gruyère or fontina offer unique flavors while melting beautifully in this sandwich.

How should the sandwich be cooked for best results?

Grill it in a skillet over medium heat, pressing gently, until the bread is golden brown and cheese has melted, about 3-4 minutes per side.

Any tips for adding extra flavor layers?

Spreading a thin layer of Dijon mustard on the bread or adding fresh baby arugula provides a peppery, tangy contrast.

Caramelized Onion Apple Cheddar

A gourmet grilled sandwich featuring caramelized onions, apple slices, and sharp cheddar on buttery bread.

Prep Duration
15 minutes
Cook Duration
25 minutes
Time Needed
40 minutes
Author Maya Brooks


Skill Level Easy

Cuisine Type American

Makes 2 Portions

Dietary Info Meat-free

Required Ingredients

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 (for spreading)
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

Preparation Steps

Step 01

Caramelize Onions: In a skillet over medium-low heat, melt 1 tablespoon butter with olive oil. Add sliced onion and salt. Cook, stirring frequently, for 15 to 18 minutes until deeply golden and soft. Optionally add sugar halfway through. Remove from heat and set aside.

Step 02

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

Step 03

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

Step 04

Serve: Remove from heat. Allow to rest 1 to 2 minutes. Slice and serve warm.

Tools Needed

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

Allergy Details

Look at the ingredient list to spot allergens. If you have questions, ask a healthcare provider.
  • Contains dairy and wheat; may contain gluten.

Nutrition Details (each portion)

These facts are just for your reference and not substitute for medical guidance.
  • Energy: 470
  • Fats: 26 g
  • Carbohydrates: 43 g
  • Proteins: 18 g