1/2 cup (1 stick) unsalted butter
1 cup all-purpose flour
1-1/2 cups sugar (divided into 3/4 cup each)
1 tbsp baking powder
1/4 tsp kosher salt
1 cup milk
4 cups (about 4 large) fresh peaches, pealed and sliced (or canned equivalent, drained)
1 tbsp fresh lemon juice
1/4 tsp lemon zest
1/4 tsp cinnamon
1/8 tsp nutmeg

Preheat Big Green Egg to 375 degrees. Melt butter in DO or cast iron skillet. Combine flour, 3/4-cup flour, 3/4-cup sugar, baking powder and kosher salt in a medium bowl. Add milk and stir just until the dry ingredients are incorporated. Without stirring, pour batter over the melted butter. Heat remaining 3/4-cup sugar, peach slices, lemon juice, lemon zest, cinnamon and nutmeg over medium-high heat, stirring constantly until sugar has melted and all ingredients are fully mixed. Without stirring, pour the peach mixture over the batter. The crust will form over the peaches during baking. Sprinkle cobbler crust with additional cinnamon if desired.