Harvest Pear Crisp

Harvest Pear Crisp
6 cups pears cored and cut lenght wise (3lbs) can use canned pears
1 T lemon juice
Mix and toss over pears:
1/3 cup sugar
1 T cornstarch
1 tsp cinnamon
1/3 cup flour
1/2 cup brown sugar
1/2 tsp salt
3 T butter
1/3 cup oats
1/4 cup walnuts mix in food processor.
Put on top of pears.
Bake at 375 for 40 minutes