Dissolve the yeast and sugar in the water in a large bowl and set aside for 5 minutes.
Once frothy, add in the oil and salt.
Gently add in the flour 1 cup at a time and stir together until a soft dough forms.
Place the dough onto a lightly floured surface and knead until smooth and elastic (this usually takes around 2-3 minutes).
Place the dough into a large bowl lightly greased with oil, cover with a kitchen cloth and leave in a warm and dark place until it has doubled in size (this should usually take around 45 minutes).
In a large pan, brown the beef mince and onion, breaking into small crumbles as it cooks.
Once cooked, drain the meat.
Roll the dough back out of the bowl onto a flat surface and separate it into 2 portions.
Press each half of the dough into large greased 12-inch pans.
Mix together the tomato sauce and herbs and spread over the dough with the back of a spoon and top with the beef, peppers and cheese.
Bake at 400 degrees c for 25-30 minutes and enjoy!