In a large bottom pan, (enough to accommodate the fillets side by side) boil the water with the onion, lemon and seasonings. 

Add the fillets and simmer for 4-6 minutes depending on thickness. 

Remove and cool.

Season the fish with salt and pepper. 

Toss other ingredients and press on top of the filets.

Place in a baking dish and bake at 400 for 20 minutes or until sweet potatoes are tender.

Toss the Tilapia (seasoned with salt and pepper), tomatoes and mushrooms together. 

Place in a clear baking dish (to see doneness of fish) covering the bottom. 

Spread the mashed potatoes on top of the mixture and bake at 350 degrees for 30 minutes or until the fish is cooked and the potatoes are browned.

Serve with Garlic Bread and Salad.

In a sauce pan bring the chicken broth, garlic, pepper, onion and mushrooms to a boil, add the asparagus and Tilapia, cover and simmer for 5 minutes.

Serve with a salad or with rice.

Since the Tilapia has a nice flavor on its own you can just season it with lemon, garlic, salt and pepper and the flavor is great.

If you want a big bold flavor try the chili-powder or Cajun marinades.

With the bolder marinades, I find I don't need salsa, just vegetables and cheese.

I like to marinate the fish for at least 8 hours, bake the fish fillets whole, and then cut them after they are cooked.

Serve the tacos with your favorite garnishes.