Preheat your oven to 350°F (175°C).

Line a baking sheet with parchment paper.

In a bowl, whisk together the flour, baking powder, and salt.

In a large mixing bowl, cream the softened butter and sugar together until light and fluffy.

Beat in the eggs one at a time, followed by the Jello powder and vanilla extract.

Gradually add the dry ingredients to the wet mixture, stirring until just combined.

Using a cookie scoop or spoon, drop rounded tablespoons of dough onto the prepared baking sheet.

Bake in the preheated oven for 8 to 10 minutes or until the edges are lightly golden.