Eggs Florentine with Savory Waffles and Herbed Hollandaise

INGREDIENTS

• 3 eggs, separated
• 1 1/2 cups buttermilk
• 8 Tbs. (1 stick) unsalted butter, melted
• 1 1/2 cups all-purpose flour
• 1 1/2 tsp. baking powder
• 1 tsp. baking soda
• 1/2 tsp. salt
• 2 Tbs. sugar
• 2 egg yolks
• 1 Tbs. fresh lemon juice
• 1/4 cup packed fresh flat-leaf parsley leaves
• 8 Tbs. (1 stick) unsalted butter, melted and kept very warm
• 1/2 tsp. kosher salt
• 1 lb. baby spinach, wilted
• 8 slices Canadian bacon, warmed
• 8 fried or poached eggs