What is on the web is registerable as a copyright. Recipies by their nature particularly if short may imply a right to a fair use. The authorship in the recipe may not be the proprietor of the web page. If you copy a wholeweb page of recipies or a recipe book you are in trouble. A mix if individual recipes from different sources is low risk.
Any web page is registerable.
If you refer to anything by a trademark name suggesting it is yours then that is trouble. If you refer to a trademark in context that is all right. What is on the web is registerable as a copyright. Recipies by their nature particularly if short may imply a right to a fair use. The authorship in the recipe may not be the proprietor of the web page.