Avocado Grilled Cheese

Avocado does not like sustained heat — it turns dull green and picks up a slight bitterness. So the sandwich is grilled with the cheese only, then opened and filled.

Two sandwiches, twelve minutes, one frying pan.

MyAvocadoTree Editorial TeamPublished 4 September 2026Updated 4 September 2026
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Golden grilled cheese sandwich cut open showing melted cheese and avocado slices

Prep

5 min

Cook

7 min

Total

12 min

Servings

2

Difficulty

Easy

Cuisine

International

  • Vegetarian
  • High protein

Ingredients

Instructions

  1. 1

    Toss the avocado slices with the lemon juice and pepper and set aside.

  2. 2

    Butter one side of each bread slice. Divide the cheese between two slices, on the unbuttered side, and top with the other two, buttered side out.

  3. 3

    Heat a dry frying pan over medium-low. Cook the sandwiches for 3 to 4 minutes a side, pressing gently with a spatula, until deep golden and the cheese has melted.

  4. 4

    Lift onto a board, open the top slice carefully, and lay the avocado inside along with the chilli flakes and spring onion if using.

  5. 5

    Close, press once, cut diagonally and eat while the cheese is still stretchy.

Recipe tips

  • Medium-low heat, not high. High heat browns the bread before the cheese melts and you end up with a cold seam in the middle.
  • Grate the cheese rather than slicing it — it melts in half the time, which matters when you are trying not to overcook the bread.
  • Adding the avocado at the end is the whole point. Cooked avocado goes grey-green and slightly bitter.
  • Mayonnaise on the outside instead of butter browns more evenly if that is what you have.

Nutrition (approximate)

Estimated per serving from the ingredient quantities above. Treat these as a guide, not a measurement — ripeness, brands and portioning all shift the numbers.

Calories
585 kcal
Protein
21 g
Carbs
38 g
Fat
39 g
Fibre
8 g

Storage

Eat straight away. Reheating separates the cheese and the avocado turns dull; there is no good way to store this one.

Frequently asked questions

Can I cook the avocado inside the sandwich?

You can, but it is worse: sustained heat turns avocado grey-green and slightly bitter. Adding it after grilling takes ten extra seconds and tastes noticeably better.

Which cheese melts best with avocado?

A medium cheddar, or mozzarella if you want stretch without much flavour. Very sharp cheeses overwhelm the avocado.

Can I make this vegan?

Yes, with a plant-based cheese and oil instead of butter. Use a cheese that is designed to melt, or it will just soften without flowing.

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