Heat the butter or oil in a large pan over medium heat. Add the garlic and sauté until the garlic is fragrant and is starting to brown. Add the tomatoes, and stir, cooking until the tomato skins blister and split. Next, add the beet noodles, stirring to coat the noodles with the butter/oil. Add the broth and cover the pan to allow the noodles to steam for about 5-8 minutes or until they become tender. Uncover and cook, stirring regularly, until the liquid is almost completely gone. Add the dill and stir. Serve with a dollop of sour cream, if desired.