Preheat oven to 400 degrees and line a baking sheet with parchment paper.
In a large bowl, combine all ingredients except the butter and mix until well combined.
Spread apples on prepared baking sheet in an even layer and sprinkle the butter pieces evenly over the top. Bake at 400 degrees until apples are soft, about 20-25 minutes. Serve warm atop ice cream, oatmeal, yogurt and granola, etc.