Easy Gluten Free Tuna Casserole Recipe! adapted from allrecipes
Cook the gluten free Pasta as directed on the package, then drain and cover.
While the pasta is cooking preheat your oven to 375 degrees F (190 degrees C).
Grease a medium baking dish with 1 tablespoon butter or oil.
Add a little oil to a skillet over medium-low heat.
Stir in the onion, celery, and garlic, and cook 5 minutes, then add the mushrooms and cook for 3 minutes more.
Melt 4 tablespoons of butter in a separate medium saucepan, and whisk in the flour until smooth.
Gradually whisk in milk, and continue cooking for 5 minutes over a low heat, until sauce is smooth and slightly thickened. Season with a little salt and pepper to taste
Stir in the tuna, peas, mushroom and onion mixture, and cooked gluten free pasta. Transfer to the baking dish.
Top with shredded cheddar cheese and then the cheese cracker crumbs on top of that.
Bake for 25 minutes in the preheated oven, or until lightly browned.
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