In the battle for dessert du jour, pies are putting the chokehold on cupcakes. (See: Four & Twenty Blackbirds, First Prize Pies.)But if buttery, flaky crusts fill you and your elastic-waist skorts with scale dread, nibble on a Northern Rye pie instead. The savory treats, made by Maija Makinen and Martiina Linna-Hipp at Astoria’s Mi Kitchen Es Su Kitchen, clock in around 100 calories each.When the Finnish duo found the traditional rice pastries they grew up with weren’t available in NYC, they decided to make their own. The jewel-like, healthy results look as good as they taste: Flavorful fillings (beet-feta, spinach-garlic, sweet potato) are held by crisp, hand-pinched rye crusts.Still craving sweets? Try the rye shortbread or hold out for the expanded cookie selection arriving soon.Available Sundays, 11 a.m.-5 p.m., at Park Slope Community Market, Fifth Avenue, at 4th Street, Park Slope, $2.25 for rainbow flavors, $1.90 for traditional rice, $18 for ten pies. For more information, e-mail firstname.lastname@example.org.Photo: George BillardGet outside! Check out our favorite places to dine alfresco in NYC.