Recipe: Apple Zucchini Muffins

Name: Recipe: Apple Zucchini Muffins
Ingredients: 1 cup all-purpose flour; 1/2 cup whole wheat flour; 1 1/2 teaspoons baking powder; 1/2 teaspoon baking soda; 1 teaspoon cinnamon; 1/4 teaspoon nutmeg; 1/4 teaspoon cardamom; 1/4 teaspoon salt; 3/4 cup granulated sugar; 1/4 cup grapeseed oil, canola oil, or other neutral-flavored oil; 1/4 cup applesauce; 1 large egg; 1 yolk from a large egg; 1/2 teaspoon vanilla extract; 3/4 cup shredded zucchini, drained and squeezed (see Recipe Note); 1/2 cup diced apple (diced small); 2 tablespoons unsalted butter, softened; 1/4 cup brown sugar; 1/2 cup quick oats; 1 1/2 teaspoons cinnamon; 2 tablespoons all-purpose flour; 3/4 cup crème fraîche; 1 tablespoon honey, or to taste