There are various foods that we know the Prophet Muhammad used to eat and what better time to consume them with the intention of following the sunnah, than in Ramadan? Not only are they extremely healthy, they’re natural, easy to consume and save you so much time!
Dates and water: We know that the Prophet used to break his fast with dates and water, as the hadith says:
“The Messenger of Allah used to break his fast before praying with some fresh dates; but if there were no fresh dates, he had a few dry dates, and if there were no dry dates, he took some mouthfuls of water.” [Sunan Abi Dawud].
He also ate cucumbers with dates, as Abdullah bin Jafar said:“I saw Allah’s Messenger eating cucumber with fresh dates”. [Sahih Muslim]
Barley: The Prophet Muhammad also consumed sawiq, which is a coarse broth made from ground wheat and barley, as Abdullah bin Abi Aufa narrated:
“We were in the company of the Prophet on a journey and he was fasting, and when the sun set, he addressed somebody, “O so-and-so, get up and mix Sawiq with water for us.” He replied, “O Allah’s Apostle! (Will you wait) till it is evening?” The Prophet said, “Get down and mix Sawiq with water for us.” He replied, “O Allah’s Messenger (If you wait) till it is evening.” The Prophet said again, “Get down and mix Sawiq with water for us.” He replied, “It is still daytime.” The Prophet said again, “Get down and mix Sawiq with water for us.” He got down and mixed Sawiq for them. The Prophet drank it and then said, “When you see night falling from this side, the fasting person should break his fast.”” [Al Bukhari].
There are many other narrations in which barley is shown to be a popular food in the diet of the Prophet Muhammad 
Fruits: The Prophet Muhammad also ate fruits like figs, grapes and olive oil with bread.
