1. Preheat the oven to 400 degrees F. On a large baking sheet, arrange the baguette slices in a single layer. Using a pastry brush, brush the baguette slices lightly with olive oil. Bake until golden, about 10-12 minutes. Remove the bread from the oven and set aside.
2. In a medium bowl, combine white beans, artichokes, spinach, basil, garlic, lemon juice, and feta cheese. Stir gently. Season with salt and pepper, to taste.
3. Spoon spinach and artichoke mixture onto the toasted baguette slices. Serve immediately.