Preheat oven to 400 degrees. Slice tomatoes in half. Toss in olive oil, kosher salt and thyme. Place cut side down in a glass baking pan, being careful not to overcrowd the pan.
Bake for 45 minutes-1 hour until tomatoes have condensed significantly.
Toast bagels. Top with cream cheese, roasted tomatoes, salmon, capers, pickled onions. Finish with a squirt of lemon.
Recipe by Talia Bunting at https://www.taliabunting.com/bagels-and-lox-with-roasted-heirloom-tomatoes/