These delicious Oozy Double Cheese Beef Burgers are perfect for lunch or dinner. With the added surprise of cheese and mayonnaise stuffed inside the burgers!
Preheat the oven to 200C/390F. Line a cookie sheet with parchment paper and set aside.
Add all the ingredients, except the 2 cheeses and mayonnaise, into a large mixing bowl. Mix well.
In a small bowl, mix together the cheddar, mozzarella and mayonnaise.
Divide the meat into two balls. Use a rolling pin to roll the mixture into two large rectangles which are 1cm thick.
Take a 93mm/3.5in cookie cutter and cut as many circles from the two rectangles as possible. Remove the excess mince from around the outside of the circles and reserve for later.
Add 2 tablespoons of the cheese mixture to the middle of half the meat circles, and press down lightly.
Cover the cheese with one of the plain meat circles and pinch the sides to encase the cheese. Repeat until all the meat and cheese mixture is used up.