This was absolutely delicious (and gorgeous as well)! I made this exactly as posted, using a removable tart pan, and 3 T. of Dijon (it looked like a lot but it worked out perfectly). This baked for exactly 30 minutes. I served this as an appetizer when entertaining, and it was completely gone. The basil and the thyme were perfect with the tomatoes, and I think the combination of the two cheeses blended nicely. Thanks for sharing this!