First, we peel and core 6 medium apples. We used Golden Delicious. Cut the apples into bit-size pieces, a job made easy by our peeling device, which turns the apple into a spiral while it is coring.
Squeeze the juice from 1 lemon.
Toss the apples with the lemon juice in a pie plate or tin. We used a standard, round Pyrex pie plate.
Meanwhile, mix the "crisp," first whisking together 1/2 cup all-purpose flour, 1/2 cup firmly packed brown sugar, 1 teaspoon ground cinnamon, and 1/2 teaspoon salt. Next, cut 1/4 cup chilled, unsalted butter into the dry ingredients using quick, pinching movements of your fingers to squeeze everything together.
Sprinkle the crisp mixture over the apples, then slide into a 375-degree oven and bake for 35 minutes, or until the crisp is beginning to brown and the apples are starting to bubble.