Preheat oven to 350 degrees Fahrenheit and set rack at center. Grease and flour two 9”x5” loaf pans using one of the tablespoons of flour.
In a small bowl, stir cranberries and raisins together with a cup of hot water; set aside for 5 minutes and then drain.
In another small bowl, stir together the chocolate chips and walnuts with the other tablespoon of flour; set aside.
In a large bowl, beat the butter until smooth. Add the pumpkin eggs, sugar, evaporated milk, and drained cranberries and raisins and beat until well-combined.
On top of the pumpkin mixture, measure the dry ingredients: 3 ½ cups flour, baking soda and powder, salt, spices, and reserved chocolate chips and walnut flour mixture. Using a small spatula, combine just the flour mixture briefly while still on top. Blend all of the ingredients together until just well-combined. (Little flecks of butter may remain that will disappear in the baking.)
Divide the batter between the prepared pans and bake about an hour or until a toothpick inserted at the center comes out clean or very nearly clean. (Turn and switch pans half-way through baking period.) Remove pans to a rack for 5 minutes. Using pot holders or mitts, bang each pan firmly on the counter and turn bread out onto rack to cool completely, using a small sharp knife to loosen edges if necessary. (Muffins: Bake at 400 degrees F for 15-17 minutes.)