Fill a liquid measuring cup with 1 ¾ cup of warm water. Sprinkle the yeast over the water and let it sit for 5 minutes.
In the bowl of your stand mixer fitted with the dough hook add the flour, three tablespoons of olive oil, water and yeast mixture, and the salt. Turn the stand mixer on medium speed for 2 minutes. When the dough pulls away from the bowl, the dough is done.
Spray a 9x13 inch baking dish with cooking spray and then add 3 tablespoons of olive oil to the bottom of the dish. Add the bread dough to the dish.
Cover the dish with plastic wrap and place it in a warm place. Let the dough rise for 60-90 minutes. The dough should double in size and look light and bubbly.
After 60 minutes, preheat the oven to 375 degrees. When the dough has fully risen, press fingertips into the bread dough. This will stretch out the dough as well as give the dough that classic focaccia dimples. Drizzle the top of the dough with 3 tablespoons of olive oil and sprinkle with kosher salt.
Arrange the fresh sprigs of rosemary into a Christmas tree pattern on the surface of the dough. Add the cherry tomatoes around the Christmas tree to make them look like ornaments. Use a cut mini pepper for the base of the tree.
Bake for 30 minutes or until the top of the bread is golden brown.
Allow the focaccia to cool slightly before cutting into it.