From TikTok's _lacebakes_
Mix together the cinnamon and sugar. Set aside 2 tablespoons for the apples, the rest will be used in the dough.
After the 15 minutes, do some stretches and pulls. Cover for 15 more minutes and then repeat once more. After the 2nd set of stretches and pulls, covers and let it sit for 1.5 hours at room temperature.
Sprinkle the Cinnamon sugar over the dough, and then fold into 3rds (forming a burrito like structure). Rotate it 90 degrees, and flip it over.
Chop the apples into bit size pieces, and in a bowl, coat them in the 2 Tbsps of the cinnamon sugar.
Scatter the cinnamon sugar apples and over the top of the fully proofed dough. Drizzle the melted butter over the top of the focaccia and then dimple.