You've found my favorite Apple Crisp recipe!
1. Core, peel, and slice 3 medium apples - arrange in bottom of greased 8" baking dish.
2. Combine 3/4 cup brown sugar, 1/2 cup flour, 3/4 cup oats, 1 teaspoon cinnamon, and 1/2 teaspoon allspice in medium bowl.
3. Cut in 1/3 cup cold butter until mixture is crumbly - sprinkle over apples in dish.
4. Bake uncovered at 375 (F) for 30-35 minutes or until apples are tender.