Mocha Walnut Muffins | Rocky Mountain Lodge

Ingredients

• 1 1/2 cups all purpose flour
• 1 1/4 cups whole wheat flour
• 1 cup brown sugar, packed
• 1/3 cup unsweetened cocoa powder
• 1 tsp. baking soda
• 1/2 tsp. baking powder
• 1 tsp. salt
• 1 cup buttermilk
• 3/4 cup vegetable or canola oil
• 1/2 cup strong coffee, at room temperature
• 3 large eggs
• 1 tsp. vanilla extract
• 1 cup semi-sweet chocolate chips, plus more for sprinkling on top
• 1 cup coarsely chopped walnuts, plus more for sprinkling on top