Empty the Holiday Panettone mix into a bowl. Heat 1 cup whole milk, 1 stick butter, 1/4 cup honey and 2 tablespoons grated lemon zest to 120 degrees in a saucepan; stir into the mix. Mix in 2 lightly beaten eggs and 1 teaspoon vanilla extract; cover and let rise until doubled in size, about 1 hour. Butter two 5-by-9-inch loaf pans or two empty 10-ounce coffee cans and line with parchment paper. Add the dough; cover and let rise 1 hour. Bake at 350 degrees until a toothpick inserted in the middle comes out clean, about 55 minutes. Cool before slicing.
Photograph by Levi Brown