Ingredients
1
medium onion, finely chopped
4
1/2 tbsp unsalted butter
10
oz mushrooms, trimmed and sliced 1/4 inch thick (4 cups)
1/4
cup all-purpose flour
2
cups low-sodium chicken broth
1
(6-oz) can tuna in olive oil, drained
6
oz dried curly egg noodles (preferably Pennsylvania Dutch style; about 3 1/4 cups)
1
1/2 cups coarse fresh bread crumbs (from 3 slices firm white sandwich bread)
4
oz coarsely grated Cheddar (1 cup)
Directions
1.
Whisk together mayonnaise and lemon juice in a large bowl. Add remaining ingredients and toss to combine. Season with salt and pepper. Serve at room temperature.