Melt the butter in a 1-quart saucepan over medium heat. Add the onions, celery, bell peppers, green onions, garlic, Worcestershire and seasonings. Saute until mixture starts sticking excessively, about 6 minutes, stirring occasionally and scraping the pan bottom well. Stir in the milk. Continue cooking for about 2 minutes, stirring occasionally. Remove from heat and allow mixture to cool to room temperature.
Place the ground beef and pork in an ungreased 13x9-inch baking pan. Add the eggs, the cooked vegetable mixture and the bread crumbs, remove the bay leaves. Mix by hand until thoroughly combined. In the center of the pan, shape the mixture into a loaf that is about 1-1/2 inches high, 6 inches wide and 12 inches long. Bake uncovered at 350F to 400F for about and hour or until done. Serve immediately as is or with Very Hot Cajun Sauce for Beef.
*..If you want to make this with ground beef only, omit the pork and increase the beef to 2 lbs..