Delightful is an adjective, so it is correct in your phrase. Delight, which can be a noun or a verb, would be incorrect.
Also, in terms of adjective order, your phrase should be Delightful homemade French recipes. For a short descriptive phrase like this, I don't think you need to use any commas at all.
Also, I don't like homemade modifying recipes. Homemade typically refers to food, or a specific kind of food, or cooking. Recipes can be used to cook at home, at a restaurant, or conceivably anywhere else. I did not find one reference to homemade recipes on Google Books corpora.
To refer to folksy, rural recipes, there are phrases such as down-home cooking or down-home recipes, but they typically apply only to cuisine of the rural American South.
Perhaps others will disagree with my opinion that homemade recipes is strange, and/or be able to suggest other options in its place.