A BLT with juicy summer tomatoes is a beautiful thing. A BLT with mealy winter tomatoes is not, so we substitute oven-roasted tomatoes for great flavor year round. Oven-roasted tomatoes can be made ahead and chilled until sandwich assembly. They will keep for several weeks in the fridge. Bacon can also be cooked ahead of time, and refreshed in the oven before assembly. Wrapping sandwiches in pieces of waxed or parchment paper before slicing in half with a serrated knife will keep halves tidy. If you can't find roasted and peeled poblanos for the cream cheese, make your own, like we do in the shop, using a gas stovetop. Using tongs, rotate the pepper directly in the flame until blackened on all sides. Place in a metal bowl and cover with plastic wrap for 5 to 10 minutes to steam, then peel.