Heat 2 Tbs. of the olive oil in a large, heavy skillet over medium high heat. Sprinkle the veal slices lightly with seasoned flour. Cook the veal for about a minute on each side. Remove and keep warm.
In the same skillet, heat the remaining olive oil and cook the onions, garlic, and crushed red pepper until the vegetables are just tender--three to five minutes. Add the white wine and stir to dissolve all the browned bits in the pan.
Crush the tomatoes by hand in the bowl. Add them to the pan along with all the juice. Also add the bell peppers and the bay leaf. Bring the pan to a boil, stirring lightly, and reduce the heat to a simmer. Cook for five to seven minutes, until the peppers have begun to turn tender. Add the oregano, salt, and butter, and remove from the heat.
Remove the bay leaf. Taste the sauce and add more salt and pepper, if necessary. Nap the sauce, along with lots of the peppers, over two slices of veal per person.
