**Preheat oven**
Preheat your oven to 375°F (190°C). Grease a 9x9-inch baking dish (or similarly sized dish) with butter or cooking spray.
**Combine wet ingredients**
In a mixing bowl, whisk together the eggs, milk, and melted butter until well blended.
**Add cornbread mix**
Stir in the cornbread mix until just combined. Avoid overmixing to keep the texture light.
**Incorporate broccoli and cheese**
Gently fold in the chopped broccoli and shredded cheddar. Season with salt and pepper if desired.
**Bake**
Pour the batter into the prepared baking dish, smoothing the top. Bake for 20–25 minutes or until the top is golden and a toothpick inserted into the center comes out clean.
**Cool and serve**
Let the cornbread rest for 5 minutes before slicing. Serve warm as a side or a simple snack.