Muffins de NuezMuffins are made in some Mexican bakeries and served in many hotel dining rooms. Although they are not a traditional part of the cuisine, they go very well with Mexican brunches and breakfasts. The pecans (pecana in Spanish but often just referred to in Mexico as nuez, meaning nut), and vanilla are native to Mexico and are often used in baked goods. Camille Tarantino, a friend who has traveled with me to Mexico, developed this recipe from our memories of muffins at a bakery in Oaxaca. The prune purée called for in this recipe adds moistness and rich dark color to the muffins (and a side benefit is that it's a more healthful muffin with less fat and calories).