Preheat oven to 350˚F (180˚C). In bowl, mix together graham crumbs and walnuts. Cut in butter with two knives or rub with fingertips until mixture resembles coarse crumbs. Toss with cheese and spread in thin layer on parchment paper-lined baking sheet.
Bake, stirring and turning pan once, 12 to 15 min. until golden brown and crisp. Cool completely, about 20 min. Break into 1/2-in. (1-cm) crumbles. Sprinkle on roasted vegetables, pasta, salad, grilled chicken and fish, baked apples and pies, or layer in savoury yogourt parfaits.
Finish step 1 of recipe and sprinkle mixture on apple crisps or pasta casseroles for baking.