Carrot Cake Muffins

Name: Carrot Cake Muffins
Ingredients: 1/4 c. all-purpose flour; 1/4 c. light brown sugar; 1/3 c. chopped pecans; 3/4 tsp. cinnamon; Pinch of kosher salt; 3 tbsp. unsalted butter, cut into 1/2-inch pieces; 1 1/4 c. all-purpose flour; 1 1/2 tsp. cinnamon; 1/2 tsp. baking powder; 1/2 tsp. baking soda; 1/2 tsp. kosher salt; 2 large eggs; 1 c. granulated sugar; 1/2 c. vegetable oil; 1 1/2 tsp. vanilla extract; 1 1/3 c. finely grated fresh carrot (about 4 large carrots); 1 tbsp. unsalted butter, softened; 2 oz. cream cheese, softened; 1 1/2 c. powdered sugar; 1 tbsp. milk