Place all dried ingredients into a large bowl and mix well.
Make a well in the middle, pour the lukewarm water into the well and gently combine with your finger until all ingredients come together.
Knead vigorously for 5 minutes until you obtain a soft, smooth and elastic dough.
Rub the surface of the focaccia dough with olive oil.Oil a baking pan and transfer the dough into it.
Place a piece of oiled cling film on top and leave to proof in a warm place for 2 to 3 hours until the dough doubles in size.
Prepare the dough for baking
Lightly rub your fingers with olive oil and poke holes in the dough.
Insert the black olives and sundried tomatoes halfway into the holes and arrange the rosemary in between. Sprinkle sea salt all over.
Bake the focaccia for 20 minutes in a pre-heated oven at 220°C. Then reduce the heat to 180°C and continue baking for 20 minutes until the sides become golden and crisp.
When baked, transfer the focaccia to a cooling rack. Allow to rest for an hour before slicing.
Notes
This recipe is a quick version with only one proof, ideal for a last-minute party.