Cut the fresh pineapple into long, even spears and remove the tough core.

Lay the pineapple spears out on a large pan or baking sheet in a single layer. Sprinkle a light dusting of cinnamon over the top.

Whisk together melted butter, brown sugar, and cinnamon in a small bowl until smooth.

If needed, microwave the mixture for a few seconds to loosen it up.

Using a basting brush, spread the caramel mixture generously over each pineapple spear.

Ensure all sides are covered for full flavor.

Preheat your grill to medium heat and prepare the grates.

Place the coated pineapple spears directly onto the grill.

Grill the pineapple for about 7 to 10 minutes, flipping occasionally for even cooking.

Watch for a deep golden brown color and grill marks.

Once caramelized, remove the pineapple from the grill and brush any leftover sauce over the spears.

Serve the grilled pineapple warm alongside vanilla ice cream, whipped cream, or enjoy on its own.