Preheat the oven to 350°.
In the bowl of a kitchen mixer fitted with a paddle attachment, combine the flour, sugar, baking powder, Poultry Magic and Vegetable Magic. Mix, using the slowest setting, until the dry ingredients are combined, about 1 minute.
Add the softened butter and process at slow speed until the butter and flour are combined and resemble a coarse meal, about 1 minute. Then add the grated cheese and chopped jalapeños and process just until combined, about 20 seconds. Add the milk in a slow stream, then process until the ingredients are just moistened, about 15 seconds. Do not overmix! Spoon the mixture into 12 greased muffin cups.
Bake at 350° until the tops of the muffins are golden brown, about 30 to 35 minutes. Remove the muffins from the oven and turn them out onto a wire rack to cool. The finished muffins should have a thick crust and a light, cake-like center.