Easy Cheddar Walnut Bread

Ingredients

• 1 1/2 cups self-rising flour
• 1/2 cup whole wheat flour
• 1 teaspoon dry mustard
• 1/4 teaspoon salt
• 1/2 teaspoon baking powder
• 1/2 teaspoon baking soda
• 2 teaspoons sugar
• 6 tablespoons unsalted butter
• 5 ounces cheddar cheese, grated
• 1/2 cup walnuts, chopped
• 2 large eggs
• 1 cup low-fat buttermilk