Preheat the oven to 200°C (390°F) on convection mode.
Drizzle olive oil over the bread slices, place them on a baking tray, and bake for about 5 minutes, or until lightly golden. Remove and set aside.
Next, heat a pan over medium-high heat, add some olive oil, garlic, rosemary, and chili flakes, and sauté for 2-3 minutes until caramelized.
Then, add the white beans and sauté for another 3 minutes. Afterward, add the lemon juice, vinegar, salt, and pepper. Stir with a wooden spoon and cook for an additional 1-2 minutes to allow the flavors to combine.
Remove from heat, then mix in the lemon zest and parsley.
Spoon the warm bean mixture over the toasted bread and garnish with a pinch of fresh rosemary.