Boil the veggies of your choice and pasta with some salt. I used carrot, capsicum, babycorn and sweet corn...used very less pasta...once boiled strain it

In a pan add olive oil and saute garlic and small finely chopped onion...add pinch of salt to it and once cooked add the veggies...add 1/2 teaspoon each of black pepper powder and pasta mix herbs (I have used snapin one)

In a bowl take 1.5 tablespoon of wheat flour and 1 and half cup of milk...mix it well ensure no lumps are there and transfer it to non-stick pan and keep cooking on low flame for 10 mins...please mix it continuously and if needed add 1/2 cup more of milk or vegetable stock to adjust the consistency....once it becomes thick...colour will change slightly add 1/2 teaspoon of black pepper powder and mix herbs and salt to taste

Another way you can make the sauce by cooking wheat flour in oil and then add milk....this method is same as traditional white sauce just replace maida with wheat flour

Finally add the white sauce to veggies...cook for few mins and serve...you can add more herbs or milk to adjust the consistency and get the perfect taste