This lightened-up casserole is the perfect way to use summer squash. It's very flavorful with a mix of fresh onions and bell ...

Stir oil into tomato mixture. Using an immersion blender, purée until smooth. Season with salt and pepper and a pinch of sugar to taste. Toss squash with a pinch of salt and 2 tablespoons oil.

Oven (best!).Cover the casserole with aluminum foil to prevent drying, and heat for about 20-25 minutes in preheated oven to 350°F (175°C) or until warmed through. Microwave (great for ...