Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper.
In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 3 minutes.
Beat in the eggs one at a time, followed by the vanilla extract. Mix until well combined.
In another bowl, combine the rolled oats, flour, baking soda, and salt. Stir until evenly mixed.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Fold in the chocolate chips and Easter-themed sprinkles, making sure they are evenly distributed throughout the cookie dough.
Using a cookie scoop or spoon, drop rounded tablespoons of dough onto the prepared baking sheets, spacing them about 2 inches apart.
Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden.
Remove from the oven and let the cookies cool on the baking sheets for 5 minutes before transferring them to wire racks to cool completely.
For a fun variation, consider adding chopped nuts or dried fruits to the dough.
Store cookies in an airtight container at room temperature for up to one week.