Preheat your oven to 425°F. Use butter or nonstick spray to grease a 9×13 sheet pan generously.
In a large mixing bowl, whisk together 2 eggs, 2 ½ cups milk, 2 tablespoons melted butter, and 1 teaspoon vanilla extract.
Add 3 cups of pancake mix to the bowl and gently whisk until just combined. A few small lumps are okay—don’t overmix!
Pour the batter into the greased sheet pan and spread it out evenly using a spatula.
Pop it in the oven and bake at 425°F for 12–15 minutes, until the top is golden and a toothpick comes out clean.
Let it cool for a couple minutes, then slice into squares. Top with butter, syrup, or fruit—whatever you like!
