Hidden veggies Beef burgers are a kids meal made healthier. Serve with more veggies and veggie fries to make this an even healthier kids meal
Grate the onion, carrot and zucchini and squeeze as much liquid out as possible (I placed the grated vegetables in a clean cloth to squeeze)
Place all the ingredients into a large mixing bowl and mix until just combined.
Divide the mixture into 6 and flatten to make burgers slightly bigger than your burger buns. (As they will shrink slightly when you cook)
Place an indent in the centre of each burger using your thumb. (This stops the burger from doming and shrinking)
Serve straight away