For the base:
8 slices smoked turkey bacon
4 whole wheat English muffins, split in half
2 tablespoons butter, softened (optional)
2 teaspoons white vinegar
8 large eggs

For the mock hollandaise:
1/2 cup light mayonnaise
1/2 teaspoon Dijon mustard
4 teaspoons fresh lemon juice, or to taste
2 tablespoons unsalted butter
Kosher salt and cayenne pepper, to taste

To assemble:
2 cups spinach leaves
8 thick tomato slices, thoroughly dried
Kosher salt and pepper, for garnish
Paprika, for garnish