My one year old loves oatmeal mixed with yogurt or applesauce. She also loves to eat yogurt plain. She also likes ground beef plain or with taco seasoning. You might also try shredded cheese or cheese crumbles. Cottage cheese is a big hit too.
You would be surprised how little they actually eat. If she is drinking 12-15 ounces of milk a day, a few table spoons of food at a meal is plenty.
other things:
crackers, graham crackers, fish sticks, steamed white fish or salmon, chicken burgers, freeze dried fruit, baked potato with cottage cheese, rice, chicken noodle soup with most of the broth drained, pancakes with applesauce, eggs, french toast, taco meat, baked french fries, raw green beans, tomatoes, shredded wheat, string cheese, ritz crackers with cheese, dried banana chips, a tortilla with cream cheese, frozen waffle with cream cheese, hot dogs with the casing removed