Keto Cinnamon Bun Muffins

Name: Keto Cinnamon Bun Muffins
Cook time: 20 min
Total time: 20 min
Cuisine: American
Ingredients: 1 1/2 cups almond flour; 1/3 cup flax seed meal; 2 tablespoons toasted finely shredded coconut; 1 teaspoon baking powder; 1/4 teaspoon ground nutmeg; 1/4 teaspoon kosher salt; 2 1/2 teaspoons ground cinnamon; 1/2 cup coconut oil, melted; 1/2 cup confectioners' erythritol sweetener (see Cook's Note); 5 large eggs, at room temperature; 1/2 cup half-and-half, at room temperature; 1 teaspoon pure vanilla extract; 1/4 cup walnuts, coarsely chopped; 1 tablespoon granulated erythritol sweetener; 2 ounces cream cheese, at room temperature; 2 tablespoons heavy cream; 2 teaspoons confectioners' erythritol sweetener