01 -
Preheat oven to 375°F (190°C). Lightly grease a 9x13 inch casserole dish or a similar-sized baking dish.
02 -
Cook the cheese tortellini according to package instructions until al dente (usually 2-3 minutes for fresh, 7-9 minutes for frozen). Drain well and set aside.
03 -
In a large saucepan or deep skillet, heat olive oil over medium heat. Add chopped garlic and sauté until fragrant and lightly golden, about 1-2 minutes, being careful not to burn it.
04 -
Pour milk into the pan with the garlic and add Italian seasoning. Heat the milk until it's warm but not boiling.
05 -
Reduce heat to low. Gradually add the cubed Velveeta and 2 cups of shredded cheese to the warm milk, stirring continuously until all cheese is fully melted and the sauce is smooth and creamy.
06 -
Turn off the heat and add the cooked tortellini to the cheese sauce. Gently fold in the quartered pepperoni pieces, making sure everything is evenly coated with the sauce.
07 -
Pour the tortellini and cheese mixture into the prepared casserole dish, spreading it out evenly.
08 -
Spoon dollops of pizza sauce over the top of the tortellini mixture. Use a spoon to lightly swirl the sauce into the top layer, creating a marbled effect.
09 -
Arrange the pepperoni slices evenly across the top of the casserole. Sprinkle the remaining 1 cup of mozzarella cheese over everything.
10 -
Bake in the preheated oven for 25 minutes, or until the cheese on top is melted, bubbly, and beginning to turn golden brown around the edges.
11 -
Remove from the oven and let the casserole rest for 5-10 minutes before serving. This allows the cheese to set slightly and makes it easier to serve.