Abby's Tuna And Broccoli Casserole

Step 1: Preheat oven to 350 degrees F.

Step 2: In pot of heavily salted boiling water

Step 3: Cook pasta until is barely al dente .

Step 4: When pasta is half cooked, add broccoli into the water with the pasta.

Step 5: Drain pasta and broccoli together, place back into the pot

Step 6: Sauce:

Step 7: Meanwhile

Step 8: While the pasta is boiling, heat the butter in a medium saucepan, then add the onions and garlic.

Step 9: Cook onions and garlic until soft, around 3 minutes, then add flour and stir to coat

Step 10: Cook a minute

Step 11: Add broth, mushrooms and milk to the saucepan and, whisking constantly, bring to a slow boil until mixture thickens.

Step 12: Remove from heat and add the tuna and cheddar cheese, stirring to melt.

Step 13: Pour the sauce over the pasta mixture and stir well to combine.

Step 14: Place pasta and sauce mixture into a buttered Pam sprayed casserole dish, and sprinkle with parmesan cheese.

Step 15: Bake at 350 degrees F for 30 minutes.