Zucchini Au Gratin - cooking recipe

Ingredients

6 medium zucchini (about 1 1/2 lb.)
1 small onion, chopped
2 oz. butter
1 (7 oz.) can sweet corn, drained
salt and pepper
2 Tbsp. flour
1/2 pt. milk
5 oz. grated Cheddar

Preparation

Blanch zucchini in boiling salted water for 8 minutes; drain. Cut slice off top, lengthwise.
Scoop out flesh, leaving 1/4-inch rim around edge.
Roughly chop flesh and top slices.
Turn shells upside down to drain.
Fry onion in 1/2 butter until light brown. Add chopped zucchini; cook on high a few minutes.
Add corn; season well.
Place zucchini shells in shallow, ovenproof dish; fill with corn mixture.