Heat the oil in a medium skillet and sauté garlic until golden brown. Add pepper flakes, sea salt, black pepper, beans, bean cooking liquid and tomatoes. Simmer for 4 to 5 minutes. Add the basil and cook 1 to 2 minutes until wilted. Turn off the flame and mix in the lemon juice. Set aside.
Place the baguette slices on a baking sheet, and bake about 5 minutes, be careful not to burn. Remove and top slices with the bean and tomato mixture.