Begin by preheating your oven to 400°F (200°C). While that's heating up, slice your French baguette. Lay the slices on a baking sheet and brush or lightly smear one side with some olive oil. This step is important; it’ll help achieve that perfect golden crisp. Pop them in the oven for about 5-7 minutes, or until lightly toasted. You want them crunchy but not too hard.

As your bread toasts, get a medium bowl and combine the diced marinated artichoke hearts, mayonnaise, grated Pecorino Romano cheese, and diced red onion. This mix is where the magic happens. Stir thoroughly to ensure everything blends together beautifully.

Now, squeeze in that teaspoon of lemon juice, followed by a sprinkle of freshly chopped parsley. This addition lifts the flavors significantly, bringing a fresh aroma to your bruschetta. Season with salt and pepper as per your taste.

After the bread has toasted, remove it from the oven and let it cool for a minute. Spread a generous amount of the artichoke mixture onto the toasted side of each slice. Don’t be shy here; the more, the merrier!

For an extra flair, you can pop the assembled bruschetta back under the broiler for 2-3 minutes. This browns the mixture on top and gives it an appealing finish, while the edges stay crispy.

Serve your artichoke bruschetta warm or at room temperature. Arrange them beautifully on a platter or individual plates. Watch as your guests devour every bite!