How do you personally make a jar of pesto (or other sauces) go farther?

This is a problem I’ve consistently been finding with bowls of saucy foods.

I made a pesto pasta with vegetables yesterday, and the jar of pesto wasn’t enough once I had added everything. The pasta ended up dry and felt pretty sauceless by the time I had mixed to the bottom. I like things wet/saucy, so especially with my recent habit of adding extra veggies to fill out a meal, I keep ending up with meals being drier than I’d like, and am struggling for healthy fixes.

The easiest ways I’ve discovered to make something like this go farther are to make it creamier or to make it oilier , but I’d love to find better options that aren’t negating some of the health benefits. Even when I ended up using olive oil last night, the pasta was too greasy and lost some of the nuanced flavor. I make pesto sometimes, but of course I’m not looking to pull out a food processor to supplement an easy meal to bring the garlic/basil/nutty tastes back in. Without buying two little jars of pesto every time I make a pot of pasta and veggies, getting crafty, or watering everything down, I’m finding no way to have larger servings saucy/moist enough.

Does anyone else also have problems with a ‘too dry’ mix of food? Has anyone found any easy, healthy ways to fill out a sauce like a jarred pesto?

How do you personally make a jar of pesto (or other sauces) go farther?