Step 1

Preheat oven to 180C/160C fan-forced. Grease a 6cm-deep, 20cm (base) square cake pan. Line base and sides with baking paper, extending paper 2cm above edges on all sides.

Step 2

Cook pasta following packet directions, until tender. Drain. Refresh under cold water. Drain well.

Step 3

Meanwhile, heat oil in a medium frying pan over medium-high heat. Add onion, garlic, thyme and bacon. Cook, stirring, for 5 minutes or until onion softens. Add zucchini and sweet potato. Cook, stirring, for 5 minutes or until sweet potato softens. Transfer to a large bowl.

Step 4

Add pasta, flour, eggs and half the cheese to vegetable mixture. Season with salt and pepper. Stir to combine. Pour mixture into prepared pan. Sprinkle with remaining cheese. Bake for 30 to 35 minutes or until golden and firm. Cool in pan. Serve.