1/2 onion chopped
3 tblsp flour
2 cups milk
Vegetable puree (healthy)-optional
cooked/prepared pasta of your choice
precooked veggies (peppers/broccoli, etc..)
precooked meat (diced chicken, salmon, etc..)
1-2 cups shredded cheese
seasonings to your taste (salt and pepper, lemon pepper, garlic...)
Melt margarine over medium heat, add in onion to saute, Add flour and whisk briskly. Gradually add milk, whisking continuously, until it reaches a boil. Reduce heat and simmer for 3 minutes, or until sauce thickens and is bubbly. Add in puree, cheese, and seasonings. Whisk until smooth and remove from heat. Add cooked pasta, vegetables, and/or meat. Place into 9x13 pan (or smaller, depending on size of casserole you are making. Sprinkle additional cheese on top. Cover with tinfoil and bake at 350 for 40-45 minutes.