Yes, you can! Hearts are automatically saved to your Cookbook
Desktop
● Tap the heart on any recipe to Save it.
To see saved recipes:
● Edit your delivery
● Tap Filter → Saved Recipes
App & Mobile Web
● On your Home feed tap the heart on any recipe. Click into any recipe from the Search tab, or your cart to heart it. The Cookbook tab shows you everything you've saved, old and new
● Create additional cookbooks anytime to organize your favorites