Add yeast, sugar and 1/2 cup lukewarm water in a bowl. Mix using a clean dry spoon, cover and keep aside for 5 to 10 minutes until it blooms.
Sift the whole wheat flour atleast 2 - 3 times. Then add salt and mix using a fork or spatula.
Once the yeast has bloomed, add the yeast mixture into the flour. Mix well using a spatula.
Now add some more lukewarm water to form a sticky dough.
Transfer the dough on a wooden board (if not using a stand mixer) and knead for atleast 10 minutes, slowly incorporating the olive oil. The dough should be soft and smooth after kneading.
Place the dough inside the bowl (grease it with some oil to prevent sticking)
Cover and let it proof until the dough is double in size. It takes anywhere between 30 minutes to an hour for the dough to proof, depending on weather conditions.
After the dough has doubled in volume. Knock the air by punching a couple of times.
Using a rolling pin, shape the dough into a circle with 2 mm thickness. It should be thick enough to hold the sauce.
Spread the pizza sauce and carefully roll into a thick log.
Cut them into 9 equal rolls and place them in a greased round baking tin. Set aside for further proving (approximately 30 minutes).
Pre-heat the oven for atleast 15 minutes at 200 Degree Celsius(400 Degree F).
Bake the pull apart bread at 200 Degree Celsius (400 Degree F)for 20 to 25 minutes or until they are golden brown.
Once the rolls are out of the oven, brush melted butter or olive oil for that lovely glaze.
De-mould the bread after a couple of minutes to avoid condensation. Place on a wire rack for cooling. Store in bread box or an air tight container.