In small bowl, stir together all crust ingredients. Press on bottom and up sides of a 9-inch pie plate. Bake for 8 minutes. Cool completely.
Mash enough strawberries to equal 1 cup. In 2-quart saucepan, combine sugar and cornstarch. Stir in mashed berries and water. Cook over medium heat, stirring constantly, until mixture thickens and comes to a full boil (8 to 15 minutes). Boil 1 minute; remove from heat.
Stir in salt and almond extract; cool 10 minutes. Fill baked crust with remaining fresh strawberries; pour cooked mixture over fresh berries. Refrigerate at least 3 hours. Garnish with whipped cream and walnuts if desired.