There are plenty of instances where targeting keywords with “recipe” in the title is beneficial. When you do keyword research it’s always a good idea to check the KW volume of your focus keyword “with” and “without” the term recipe added. Sometimes, that’s an opportunity for a weaker blogger to target a phrase they can actually rank for. But no, you absolutely DO NOT need to be adding “recipe” to the end of all your “keywords.” That’s a sign you haven’t done enough KW research.