You will need Silicone Popsicle Molds. Maybe try with ice cube trays.
Let me know if you try this recipe. Mary@star92.com
https://www.thekitchn.com/recipe-3-ingredient-peanut-butter-and-banana-popsicles-232439?epik=dj0yJnU9eGtqMmJhR3YxZVJHcEU2Ul9zQWx0VnZHY0lSRmd5aGgmcD0wJm49d01SS3hhS2xGWWNYdTBUcXlmYkh6QSZ0PUFBQUFBR1Ixei1V#post-recipe-11251