Mix the wet ingredients. Mix into the dry ingredients. Fold in the fruit.
Pour into a greased 9” round or 8x8” pan. Evenly spread mixture around the pan and press the fruit down so that they aren’t sticking out. Alternatively, you can divide the mixture between 14 well-greased muffin cups (I'd recommend using liners).
Bake at 350F for 35-40 minutes or until center feels firm and edges have browned, or until the oatmeal tests clean. It'll be about 35 minutes for the cups, and 40+ for a pan. Cool 5 to 8 minutes before serving with yogurt and more berries.
You can use a different kind of milk if you'd like. I like using frozen berries because they're so easy to cheap (and no need to thaw). Don't bother peeling the apple- the peel softens in the oven, and unless you're super picky, it's not noticeable.
Calorie count does not include serving suggestion.