BAKED APPLE VOLCANOES Apples and berries go great together. Plus, they're both full of fiber and vitamins. You can core and bake your apples or slice and bake them. A quick 15 minutes in the oven at a preheated 350 degrees will produce a perfect baked apple, which brings out the fruit's natural sugars. Next, mix in some fresh berries and beet juice "lava" for added fun. Add a sprinkle of sea salt to bring out the sweetness.