If you are actually going to cook it tonight then you need to get it in the oven pretty soon because you will need 2 1/2 to 3 hours to cook it. You could cut it up into chunks and make something out of it like chile verde
CHILE VERDE
3-4 lb. boneless pork roast (Boston butt)
2 cloves garlic, minced
1/2 med. onion, chopped
1 1/2 c. canned tomatoes (or 1 sm. can tomato sauce)
1/4 tsp. oregano
Salt and pepper
1 sm. can green chilies (or 1/2 jalapeno pepper)
2 tbsp. shortening
Cube pork roast in 1/2-inch cubes. Brown meat in shortening; do not drain. Add remaining ingredients and 1-2 cups water. Cook on low for 1 hour until meat is very tender.
Make thickening paste with 1/4 cup flour and 1/2 cup water. Push meat to one side and pour thickening into broth. Stir until desired consistency is reached. Stir meat into thickened broth and continue cooking a few minutes. Pour into floured tortilla and roll to make a chile verde burrito.
Here is a basic roast recipe that fits into the plain ole cooking catagory.
3 to 4 lb. Boston Butt or pork roast
4 to 5 each potatoes, carrots, and onions, peeled and halved
1 head green cabbage, cut in wedges
Flour, cajun spice or salt and pepper
Oil
Season meat with cajun spice or salt and pepper. I would rub a little cyanne into the meat as well. Rub with flour. Brown in hot oil. Place in Dutch oven on rack, and partially cover with water. Cover and cook over medium heat for 2 1/2 to 3 hours, depending on size of roast. The last hour and a half, add all vegetables, and more water, if needed. Gravy may be made by thickening the stock, and seasoning to taste with salt and pepper.