Ham and asparagus frittata

PREPARATION TIME 15 MINUTES ES COOKING TIME 45 MINUTES
4 slices of ham 100g
1 large red onion (300g), sliced thinly 170g asparagus, trimmed, halved lengthways
8 egg whites
1 cup (250ml ) buttermilk
1 Preheat oven to moderate, oil deep 19cm-square cake pan; line base and sides with baking paper.
 2 Cook ham, stirring, in a small heated non-stick frying pan until crisp. Add onion to the same pan; cook stirring until soft. Layer ham, onion and asparagus in prepared pan.
3 Whisk egg white and buttermilk in a medium jug; pour into pan. Bake, uncovered, in moderate oven about 35 minutes or until frittata is set. Stand covered 10 minutes before cutting into squares.
Serves 4 per serving 8.5g carbohydrate; 11.6g total barrel (4.3g saturated fat); 1349kJ (322 cc); 45.6g protein