Question about using lentils???

[ConnorTraceptive]

I want to put red lentils in a spag bog to bulk it out a bit, do I have to cook them first or will they just cook in the sauce as it were?

TIA

As long as you cook them for 20 minutes plus and there's enough liquid, they should be okay. Give them a good wash first as you might not be able to spot the scummy froth in a spag bol!

ok thanks