Use freshly dug from the garden carrot top greens for this unique pesto recipe filled with walnuts, garlic and grated carrots. This green pesto is perfect stirred into pasta or served as a simple appetizer slathered over bread. make this stem to root zero - waste recipe and use the whole carrot vegetable in one recipe. Try this unique vegetable greens pesto recipe using carrot tops for a quick, herb flavored dinner.