Did Hamas really put a baby in an oven ?

No, they most certainly did not. If you ask any of the Zionists in the answers here who say yes for a proof, they will provide none.
However, Zionist terrorists did indeed burn a Palestinian child in an oven, along with his father, in the Deir Yassin massacre in 1948. That’s how the Zionists stole the real Palestinian story.
Perhaps one of the most graphic witness testimonials comes from Othman Akel:

“I saw the Zionist terrorist soldiers ordering the bakery man of the village to throw his son in the oven and burn him alive. The son is holding the clothes of his father tightly and crying from fear and pleading to his father not to do it. the father refuses and then the soldiers hit him in his gut so hard it caused him to fall on the floor. Other soldiers held his son, Abdel Rauf, and threw him in the oven and told his father to toast him well-done meat. Other soldiers took the baker himself , Hussain al-Shareef, and threw him, too, in the oven, telling him, “follow your son, he needs you there”.

Further reading: Deir Yassin massacre.
The Israeli forces have burned Palestinian children in Gaza on a daily basis for the past 8 months.
ALWAYS KNOW THIS : EVERY ZIONIST ACCUSATION IS A CONFESSION.