1. Preheat oven to 350 degrees Fahrenheit (180 degrees Celsius).
2. Slice apples very thinly and place in a 9- x 13-inch pan.
3. Spread apricot preserves over apples. (You may need to first heat preserves to soften.) Sprinkle generously with cinnamon.
4. Mix batter ingredients well by hand to form batter. Spread over preserves.
5. Bake, uncovered, one hour and 15 minutes, or until golden brown.