Pre-heat the oven to 180 °C.If you are making a large tart, prepare a 30 cm x 35 cm tray with baking paper. If you are making smaller tarts, prepare two 25 x 30 cm trays with baking paper. Roll out the chilled pōhā (pastry) to a 30 x 35 cm rectangle, it should be just under 1 cm thick.
If you are making one large tart, add it to the baking paper. If you are making mini tarts, cut the dough in to 8 mini pieces and add 4 pieces on to each tray with a 2cm gap between each one. Create a border around of the tarts by folding over the edge of the pastry.
For the large tart, spread all of the leek and cheese mixture on to the pastry. For the mini tarts, divide the leek and cheese mixture between the 8 pieces. Spread it on evenly. Cut, core and peel the paukena (pumpkin). You should have around 300g of paukena (pumpkin) to peel. Using a potato peeler, peel the potato in to rīpene (ribbons). This helps the pumpkin cook fast and looks beautiful too.
Arrange the rīpene paukena (pumpkin ribbons) on the tart or tarts. I like to stand it up in to round shapes, this is optional.
Waruwarutia te toenga o te tīhi ki runga - grate on the rest of the cheese.
Cut the pēkana ropiropi (streaky bacon) in to small pieces. Sprinkle over top of the tart/tarts.
Sprinkle over the fresh tāima (thyme) or any favourite herbs you have.
Bake the tray in the bottom of the oven for 35 minutes. If you are baking the mini tarts, swap the trays around half way through for an even bake.