In a bowl, combine the flour and salt. Add the remaining ingredients and mix just until smooth. Cover in plastic wrap and let rest at room temperature for 30 minutes.
Meanwhile, in a large skillet over medium heat, soften the chard leaves in the butter until wilted. Season with salt and pepper. Transfer to a bowl. Stir in the remaining ingredients, except for the chard stems. Adjust the seasoning.
Form the dough into balls of about 1 tbsp each. Roll each ball into a 3-inch (7.5 cm) disc. Place 1 tbsp of the filling at the centre of each disc. Brush the border with a small amount of water and fold the discs into half-moons. Press the dough around the filling to get rid of any air bubbles. Set aside on a large plate and cover with a clean dishtowel or plastic wrap.
In a pot of salted boiling water, cook half of the ravioli at a time for 5 minutes. With a slotted spoon, remove them from the water and transfer to a lightly oiled baking sheet.
Meanwhile, in the same skillet over medium-high heat, soften 1 cup (110 g) of the chard stems (reserve the rest for another use) in 1 tbsp of the butter. Season with salt and pepper. Set aside in a bowl.
In the same skillet over medium heat, lightly brown half of the ravioli at a time in the remaining butter, about 2 minutes per side. Divide the ravioli among six plates and garnish with the chard stems, pine nuts, parsley and cinnamon.
Recipes with the "Healthy Pick" stamp have been evaluated by a registered dietitian member of the Ordre professionnel des diététistes du Québec.