Baked Penne with Roasted Vegetables Ingredients 2 red bell peppers, cored and cut into 1-inch wide strips 2 zucchini, quartered lengthwise and cut into 1-inch cubes 2 summer squash, quartered lengthwise and cut into 1-inch cubes 1 yellow onion, sliced thinly 3 cloves garlic, thinly sliced 2 tbsp olive oil 1 tsp salt, divided