Heat your oven to 400 degrees
Place the butter in the baking dish and let the butter melt in the oven until it begins to brown, about 10 minutes. Watch it closely so it doesn't burn. Remove the butter from the oven while you get the peaches ready
Stir together the peaches, raw sugar, cornstarch, cinnamon, and thyme. Then simmer until the peaches become juicy, about 10 minutes. Discard the cinnamon stick and thyme stalk
Stir the flour, white sugar, baking powder, and salt together then slowly stir in milk and vanilla to make a batter. Strain out any lumps
Pour the batter over the melted butter, DO NOT STIR
Spoon the peaches over the batter DO NOT STIR
Bake the peach cobbler for 40-45 minutes until bubbly and brown