Beet, Feta And Walnut Tarts - cooking recipe

Ingredients

2 None onions, thinly sliced
2 tbsp brown sugar
1/2 tbsp mustard seeds
1/4 cup balsamic vinegar
1/4 tsp salt
None None Beet, Feta and Walnut Tarts
1 sheet frozen puff pastry, defrosted, cut into quarters
16 oz jarred beets, drained, diced
2.5 oz feta
1/3 cup walnuts, chopped
1 tbsp fresh rosemary leaves
1/2 tbsp olive oil

Preparation

For the onion jam, combine onions, brown sugar, mustard seeds, vinegar, salt and 1/4 cup water in a small saucepan. Simmer gently for around 45 mins.
Preheat oven to 400\u00b0F. Grease a baking sheet. Score a 1/3 inch border around each pastry section, creating a \"frame.\" Place pastry on prepared sheet.
Combine beets, 1/2 the feta, walnuts, rosemary and olive oil. Toss gently to mix.
Spread 1/2 of the onion jam over pastry squares, inside borders. Add beet mixture then crumble remaining feta over top. Bake for 20-25 mins, or until pastry is golden brown.