Adapted from Good Eats
1/2 cup AP flour
1/3 cup + 2 Tbsp sugar, separated
1/2 cup chopped nuts
1/4 cup rolled oats
1 cup crushed animal crackers
2 Tbsp butter, chilled and chopped
12 oz. frozen blueberries
2 Tbsp cornstarch
Heat oven to 350.
Place the flour, 1/3 cup of sugar, nuts, oats, and crackers into a large mixing bowl and combine. Work the butter into the dry ingredients with your hands until it is crumbly.
In another bowl, mix the frozen berries, 2 tablespoons of sugar, cornstarch and a 1/2 cup of the crisp topping. Place the berry mixture into a baking dish and top with the rest of the crisp topping. Bake for 45 to 60 minutes. Let rest for 15 minutes, and serve with vanilla ice cream.