1 3/4 c Quaker Oats, uncooked
-- (quick or old-fashioned)
1 1/2 c All-purpose flour
3/4 c Brown sugar, firmly packed
1/2 c Chopped nuts
1/2 ts Baking soda
1/2 ts Salt (optional)
3/4 c Margarine or butter -- melted
2 c Fresh or frozen blueberries
1/2 c Granulated sugar
3 tb Water
2 tb Cornstarch
2 ts Lemon juice

1. Heat oven to 350 F. Grease 11x7-inch glass baking dish. Combine oats,
   flour, brown sugar, nuts, baking soda and salt. Add margarine, mixing
   until crumbly.
2. Reserve 3/4 cup mixture; press remaining mixture onto bottom of prepared dish. Bake 10 minutes. Meanwhile, combine blueberries, granulated sugar and 2 tablespoons water. Bring to a boil, simmer 2 minutes, uncovered, stirring occasionally.
3. Combine remaining 1 tablespoon water, cornstarch, and lemon juice; mix well. Gradually stir into blueberry mixture; cook and stir about 30 seconds or until thickened. Spread over partially baked base to within 1/4 inch of edge; sprinkle with reserved oat mixture.
4. Bake 18 to 20 minutes or until topping is golden brown. Cool on wire rack; cut into bars. Store tightly covered.