01 -
Heat the oven to 350 degrees F. Line a large baking sheet with parchment paper.
02 -
Chop the spinach finely, then press it between paper towels until most surface moisture is gone.
03 -
In a bowl, stir the softened cream cheese, mozzarella, Parmesan, garlic powder, onion powder, salt, pepper, and red pepper flakes until combined.
04 -
Add the chopped spinach and mix until the greens are evenly distributed through the cheese mixture.
05 -
Drop rounded tablespoon portions onto the baking sheet, spacing them about 2 inches apart. Flatten slightly and sprinkle cheddar over each mound.
06 -
Bake for 15-20 minutes, until the cheese is bubbling and the edges are golden brown.
07 -
Let the bites cool on the pan for 5 minutes so they firm up, then transfer with a thin spatula and serve warm.