In a medium saucepan, combine your diced mango, granulated sugar, and finely chopped jalapenos. Stir gently to mix everything together.

Heat the mixture over medium-high heat, stirring often until it reaches a light boil. Then, increase the heat slightly and maintain a simmer for 25-30 minutes.

Once the jam has finished cooking, remove it from heat and let cool for a few minutes. Transfer your jam to jars, sealing them tightly.

Place them in the refrigerator until completely cool and set.