Preheat oven to 350 degrees Fahrenheit.
In a stand mixer or a large mixing bowl add in the eggs, butter, vegetable oil, and vanilla extract.
Using the whisk attachment or a hand mixer, beat until fully mixed.
Add in the salt, sugars, and cocoa powder mixing until well incorporated.
Slowly add in the flour in ¼ cup increments, mixing in between each increment.
Once all the flour is well incorporated, add in the mini eggs and chocolate chips.
Fold the chocolate into the brownie batter.
Once finished, pour the batter into a prepared 9x9 pan.
Bake for 30-35 minutes or until fully cooked.
Check with a toothpick to ensure the brownies are done. If the toothpick comes out clean, they are done!
Take out of the oven and allow to cool to a desirable temperature.
Serve and enjoy.