Sour cream and onion tart

Ingredients:

8 slices of bread, crusts removed
butter, spreading on bread
4 red onions, thinly sliced
1Tbsp olive oil
1tsp sugar
2tsps balsamic vinegar
300g sour cream
1Tbsp cornflour
3 eggs
1 cup grated Swiss cheese
salt and pepper to season

Method:

Preheat oven to 180 °C. Remove crusts from 8 slices of bread, spread all sides with butter, and line a large loaf tin with the slices. Put olive oil in a large pan, add the onion and a teaspoon of sugar, cook over a low heat until onions brown, add balsamic vinegar and cook for 5 minutes. Put onion in bread-lined tin. Pour sour cream into a large mixing bowl, add cornflour, eggs, grated Swiss cheese, season with salt and pepper and whisk to combine. Pour sour cream mixture over onions, bake for 25-30 minutes then let stand for 5 minutes before serving.

Kate's tips:

Chorizo – lightly fried to brown and release natural oils, add to bread-lined tin with onion mix.