Easy Baked Beans
["1 large can pork and beans", "1/4 c. brown sugar", "1 Tbsp. dry mustard", "1 Tbsp. finely chopped onion"]
["Mix together and pour into 1-quart casserole dish. Bake at 400\u00b0 for 45 minutes."]
["pork", "brown sugar", "mustard", "onion"]