Poached Fish with Garden Vegetables Recipe | Say Mmm

Ingredients

• 5 tablespoons unsalted butter, divided use
• 1 medium sweet onion, sliced
• 1 can diced tomatoes with juice
• 1 cup water
• 1 large (or two small) yellow bell peppers
• 8 to 10 cherry tomatoes, halved
• 1 Tablespoon assorted fresh herbes (thyme, chives, tarragon, sage)
• 2 (6 ounce) filets of a firm, white fish
• Kosher salt and pepper
• 1 lemon, halved