Spray your waffle iron with nonstick cooking spray and turn it on to preheat it, according to manufacturer’s instructions.

Add the olive oil to a sauté pan over medium heat. When it’s hot, add the sliced Brussels sprouts and cook until they soften and begin to caramelize, just slightly (about 3-4 minutes). Remove the pan from the heat and set aside.

In a large bowl, blend together the flour, baking powder, sugar, and salt. Set aside.

In a medium bowl, whisk together the eggs, milk, and melted butter. Mix the wet ingredients into the dry ingredients and blend until incorporated. Add salt and pepper to season.

Add the ham, cheese and Brussels sprouts to the batter, and gently mix together.

When the waffle iron is hot, ladle the batter into it so it fills the wells in the iron, but make sure it doesn’t overflow. Cook until your desired level of crisp is achieved (about 4 minutes). Remove it from the waffle iron and serve hot with maple syrup or honey mustard sauce. Repeat with the remaining batter.