Blue cheese burger with red onion relish

Ingredients for 6 servings

BURGER BUNS (Makes 10 buns)

300 ml water

50 ml oil

1 large egg + 1 egg for brushing

15 g yeast

1 tsp salt

1 tbsp sugar

150 g semolina flour

400 g wheat flour

60 g butter

sesame seeds to sprinkle on top



5-6 red onions

25 g butter

2 tbsp brown sugar

2-3 sprigs of thyme (or a half tsp of dried thyme)

100 ml red wine (can be omitted)

100 ml balsamic or sherry vinegar

salt and pepper


BURGER PATTIES (makes 6 burgers)

750g ground beef

Salt and pepper



1 pack Castello® Burger Blue

1 large beefsteak tomato


Maille Old Style Dijon Mustard

Blue cheese burger with red onion relish


Burger buns

Mix the egg, water, oil, sugar and yeast together until the yeast dissolves. Mix the two types of flour with the salt. Add 2/3 of the flour mix to the liquid mixture and stir together. Continue adding the last part of the flour mixture until you can touch the dough without it sticking to your fingers. Knead the dough for about 5 minutes, then add a small cube of cold butter. Knead until it is incorporated into the dough.

Let the dough rise under a cloth for one hour. Place the dough on a board sprinkled with flour. Divide the dough into 10 equal portions. Roll it out to the buns and place them on a baking sheet. Let them rise for another half hour. Brush with egg and sprinkle with sesame seeds.

Bake the buns at 400 degrees F  for about 12-15 minutes. They must have a bit of colour and sound hollow when you knock them on the bottom.

Red onion relish

Cut the onions into thin strips and fry them at low to medium heat in butter until lightly caramelized. It will take approximately 10-15 minutes. Add thyme, brown sugar, red wine and vinegar. Let cook until the liquid has boiled down. Season with salt and pepper.


Form 6 equal patties of meat. Season them with salt and pepper. Put them on a scorching grill for 3-4 minutes on each side - however, the needed time depends slightly on the heat of the grill. After flipping the burgers, you can add the cheese on the grilled side. When you are done grilling the meat, you can use the grill to warm up the burger buns.

Split the buns and spread mustard on both cut sides. Add a leaf of lettuce and a slice of tomato. Top with the meat and relish. Close the burger. Enjoy!