Preheat oven and prepare baking sheets.
Soak raisins in hot water, then drain and dry.
Cream butter and both sugars until fluffy.
Beat in eggs one at a time, then add vanilla.
Mix dry ingredients in a separate bowl.
Add dry ingredients to wet and mix gently.
Stir in oats, raisins, and nuts.
Scoop dough onto sheets, flatten slightly.
Bake for 10–12 minutes until edges are golden.
Cool on sheet, then move to wire rack.