Begin by heating the olive oil in a medium skillet over medium heat. Add the petite diced yellow onion and sauté for about 3-4 minutes until the onions become translucent. Then, add the diced pepperoni and cook for an additional 2-3 minutes until the edges start to crisp up.
In a large mixing bowl, combine the softened cream cheese, ranch seasoning, freshly shredded mozzarella cheese, and grated parmesan cheese. Mix until everything is well incorporated and creamy.
Once your onion and pepperoni mixture is ready, add it to the cream cheese mixture. Stir until fully combined, ensuring that the pepperoni and onions are evenly distributed throughout the dip.
Preheat your oven to 350°F (175°C). Spread the dip mixture into a greased baking dish. For a decorative touch, place the reserved slices of pepperoni on top of the dip.
Place the baking dish in the preheated oven and bake for 20-25 minutes, or until the dip is hot and bubbly. The cheese on top should be slightly golden and deliciously melty.
Once baked, remove the dip from the oven and let it cool for a few minutes. Garnish with fresh basil chiffonade for a pop of color and flavor. Serve warm with tortilla chips, pita bread, or your favorite dipping option. Enjoy every cheesy, pepperoni-packed bite of this Pepperoni Ranch Chip Dip!
