Preheat your oven to 375° F. This is an essential step to ensure your cobbler bakes evenly and achieves that perfect golden color. A hot oven is key for a delicious base.
Grease a 9×13 inch baking pan with a little butter or cooking spray to prevent sticking. This also adds a bit of flavor to your cobbler.
In a large bowl, combine the frozen mixed berries with brown sugar and lemon juice. Stir gently to coat the berries evenly. You’ll want to let the berries sit for a few minutes to draw out their juices, making the filling extra delicious.
Pour the berry mixture into the greased baking dish, spreading it out evenly. Make sure to get all the juices in there, as this is what gives your cobbler its incredible flavor.
In a medium bowl, mix the remaining ingredients: cake mix, butter, milk, and granulated sugar until thoroughly combined. Don’t worry if there are some small lumps; they’ll bake out nicely!
Spoon the cake mixture over the berry layer, spreading it gently but evenly. It’s okay if some of the berries peek through; they'll create a beautiful, rustic look.
Sprinkle granulated sugar evenly over the top of the cake mixture. This will caramelize and create a lovely crispy topping that adds texture.
Place the pan in the preheated oven and bake for 45 minutes. You’ll know it’s ready when the top is golden brown, and the fruit is bubbling around the edges. Keep an eye on it during the last few minutes to avoid over-browning!
Once baked, remove the pan from the oven and let it rest for at least 15 minutes before serving. This waiting time allows the juices to settle, making it easier to serve.
Serve your Easy Mixed Berry Cobbler warm, topped with a scoop of ice cream or whipped cream, if desired. Enjoy the smiles it brings!
