Mature Cheddar steak burger with caramelised onions and portobello mushrooms

A perfect pairing of fine dining and comfort food – our Mature Cheddar steak burger with caramelised onions and portobello mushrooms seats grilled entrecote beneath a garnish of onions marinated in beer and butter. Apace with a bouquet of grilled mushrooms, the flavours are mild, allowing the steak to take centre stage.

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Mature Cheddar steak burger with caramelised onions and portobello mushrooms

Ingredients

4 burger buns
4 slices cheddar cheese, matured
oil for grilling
portobello mushrooms, sliced
4 120g steaks, such as entrecotes
50 g rocket leaves, rinsed
4 tbsp good mayonnaise

Beer-caramelised onions:

25 g butter
2 onions, thinly sliced
½ tbsp sugar
100 ml brown ale
salt
ground pepper
chips or potato wedges
chilli flakes for sprinkling

Preparation

Preparation

Melt the butter in a pan over medium heat.

Add the sugar and onions and sauté, stirring constantly, for about 15 minutes, or until the onions are soft.

Pour beer over the onions a little a time, letting it boil off completely before adding more. Keep going until the onions are caramelised.

Season to taste with salt and pepper.

Heat a grill pan until it is smoking hot.

Grill the steaks for approx. 2 minutes on each side.

Top each steak with Mature Cheddar, season with salt and pepper and set aside to rest.

Brush the mushrooms with oil and grill them.

Split the buns and warm or toast them.

Spread the buns with mayonnaise and top with rocket, steak, mushrooms and onions.

Serving Suggestion

Serve with chili-fries and extra mayonnaise.

Cheddar steak burger with caramelised onions and Portobello mushrooms

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