Ever have one of those days where you had no time to get to the grocery store, kids are fighting, house is a wreck, but you just have to do ONE thing that day that feels like you accomplished something? I had one of those scramble around your kitchen looking for something to cook nights. Here is my last minute concoction. It was pretty good for using ingredients stuffed in the back of my pantry. Plus, I felt like I did something!! Mommy mission accomplished.
While water is boiling and noodles are cooking. Melt the butter in pan. Once the butter has melted, sprinkle in the flour and stir while letting the mixture cook for about 1 minute.
Whisk in chicken broth and let cook about 4-5 minutes until it has thickened. Add milk, mustard, tarragon, minced onion and hot sauce and bring the mixture back up to a bubble. Turn off heat and add 1 tablespoon cheese and tuna, salt and pepper. Combine everything in a casserole dish and cover with the 2 tablespoons of cheese.
Bake for about 10 minutes until cheese melts and the top slightly browns.