I'd taste-test, using a small amount at a time. A mouthful of, for example, rosemary or oregano is too much for most of us. Herbs are best used in very small amounts, for seasoning. They're also very pricey in quantity, unless you grow and dry your own.

Speaking of drying your own veggies, chopped frozen spinach dehydrates very easily in dehydrator or oven. Just crumble it up fine afterwards. Voila, plenty of vitamin A, calcium and folic acid to add to your one-dish meals!