This cobbler is intentionally built on simplicity, but there are a few easy adjustments that can shift its character meaningfully without adding complexity. If your frozen peaches were quite sweet to begin with, reduce the sugar sprinkled over the top from a quarter cup to two tablespoons — the cobbler will still caramelize beautifully and will be a little less sweet overall, which many people actually prefer alongside vanilla ice cream.
For a slightly spiced version that is particularly wonderful in fall and winter, add half a teaspoon of ground cinnamon and a pinch of ground nutmeg to the sugar you sprinkle over the frozen peaches before baking. These warm spices deepen the peach flavor considerably and make the kitchen smell extraordinary as the cobbler bakes. A few drops of pure vanilla extract stirred into the batter before pouring is another gentle addition that gives the whole thing a slightly richer, more rounded flavor without veering away from simplicity.
If you want to use canned peaches instead of frozen, drain two large cans thoroughly, pat the peach slices dry with paper towels, and reduce the total sugar in the recipe by about two tablespoons since canned peaches tend to be considerably sweeter than frozen ones packed without syrup. The baking time will also decrease to approximately 40 to 50 minutes since canned peaches are already fully soft and do not need to thaw and cook through from frozen.
To make this cobbler ahead for a gathering, you can assemble the entire dish right up to the point of adding the sugar on top, then cover it tightly and refrigerate for up to four hours. Add the final sugar sprinkle just before placing it in the oven and add about ten extra minutes to the baking time to account for the chill. Leftovers keep well covered in the refrigerator for up to three days and reheat beautifully in a 325-degree oven for fifteen minutes or in the microwave for individual portions. The topping will not be quite as crisp after refrigerating and reheating, but the flavor is, if anything, even better the following day when everything has had time to meld together in the dish overnight.
One final note worth emphasizing: this recipe works because you trust the process and do not stir anything together in the dish. The layering of melted butter, then batter, then frozen fruit, then sugar — each added without mixing into what came before — is what creates the distinct cobbler structure as everything bakes. Resist the urge to combine, and the oven will do everything else for you.