Step 1

In the bowl of a stand mixer fitted with a dough hook, combine the water, yeast and sugar. Let stand for 5 minutes until the yeast becomes foamy. Stir in 1 cup flour and 1/4 cup olive oil. Let stand for an additional 5 minutes. Add the remaining flour and 1/2 teaspoon kosher salt and mix on medium speed until a sticky but smooth dough forms. Transfer the dough to an oiled bowl and let rest for 1 hour.

Step 2

Preheat the oven to 400 degrees F.

Step 3

Arrange the tomatoes, cut side up in a single layer on a parchment lined-sheet pan. Roast for 25-30 minutes until the tomatoes are wrinkled at the edges, but still juicy in the middle.

Step 4

Increase the oven temperature to 450 degrees F. Oil a 13-inch by 9-inch sheet pan. Stretch the dough to fit the pan. Use your fingers to press dimples all over the dough. Allow the dough to rise slightly, about 20 minutes.

Step 5

Press tomatoes into the dough. Drizzle with 2 tablespoons olive oil and sprinkle with 1/2 teaspoon flaky sea salt and 1/4 teaspoon black pepper.

Step 6

Bake for 20-25 minutes until light golden brown. Transfer to a wire rack to cool. Sprinkle with parsley and chives.

Step 7

Focaccia can be served warm or at room temperature.