Recipe Talk

hello, all! I find myself in a bit of a pickle! I am making wood burned cutting boards for christmas gifts using family recipes. however, the recipe i am wanting to use for my aunt is only a partial recipe. i have the list of ingredients and the bake temp and that's pretty much it. I don't have the process instructions. I would probably wing it and figure it out, but I would feel terrible if I got something wrong. So i am here, wondering if anyone knows where I can find a recipe matching what i have to work with. Here is what I got:
1 vup unseasoned mashed potatoes hot
2 cups sugar, 2/3 cups shortening, 4 eggs unbeaten, 1 teaspoon vanilla, 2 cups sifted flour, 1/2 cup cocoa, 3 tsp baking powder, 1 tsp cinnamon, 1 tsp nutmeg, 1/2 tsp salt, 1/2 cup milk 1 cup chopped walnuts
preheat oven to 350

If anyone knows where I can find the rest of this recipe, I would be so so grateful! It was from my grandmother's recipe box, but she passed away in 2001, so I can't ask her. Thanks, in advance, guys!