Mushroom White Sauce Burger

Ingredients

Burger

• Ready-made beef burger patties
• Burger buns (see the burger buns recipe)
• Tomato
• Lettuce
• Onion
• Pickles
• Swiss, kashkaval or Edam cheese
• Salt and black pepper
• Butter for toasting the buns

Bun sauce

• 2 tbsp mayonnaise
• 1 tbsp ketchup
• 1 tsp mustard
• 1 tsp sugar
• 1 tsp white vinegar
• 2 tbsp chopped pickles

Mushroom white sauce

• 5 large mushrooms, sliced
• 1/2 small onion, sliced
• 1 tbsp flour
• 3 tbsp butter with 1 tbsp vegetable oil
• 1 tsp garlic seasoning
• 1 tsp black pepper
• 1 tbsp cream cheese
• 1/4 cup milk
• 1 tsp oregano
• 1/4 stock cube (optional)

Method

1. Make the bun sauce by mixing its ingredients with a fork and set aside.
2. White sauce: heat the butter and oil, soften the onion, then the mushrooms, covered. Season with salt, black pepper and garlic seasoning, add the flour and milk and stir until thick (a quarter stock cube is optional), then the cream cheese. Once cooled, add the oregano.
3. Heat a pan with a little oil, fry the patties seasoned with salt and black pepper, flip and top with cheese to melt.
4. Split the buns, butter lightly and toast the insides. Add the bun sauce, then tomato, lettuce, onion and the patty, and finish with the mushroom white sauce and pickles.