Low budget dinner, you surely have all of the ingredients in the pantry.
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Prepare the dough. Mix the flour, yeast and olive oil. Add some warm water, until you get a smooth douh.
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Roll the dough and move it into a greased tin. Cover and let it rest in a warm place for 25 min.
Preheat the oven at 180 C.
Sprinkle with olive oil, oregano and salt.
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Slice the tomatoes, cheese and ham. Arrange everything on top of the dough.
Bake in the oven for 30 min, or until golden brown.
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Serve with beans salad or fresh greens.