Apple Streusel Muffins

• 2 c. flour
• 1/2 c. sugar
• 2 tsp. double-acting baking powder
• 1/2 tsp. salt
• 1/2 c. (1 stick) butter (room temperature)
• 1 large tart apple, pared, cored and diced (about 1 c.)
• 1/2 tsp. freshly grated lemon zest
• 1 egg, well beaten
• 2/3 c. milk
• 1/2 tsp. freshly grated zest
• 1/4 c. chopped walnuts
• 2 Tbsp. sugar

1. Preheat oven to 425u0b0. Sift together flour, 1/2 cup sugar, baking powder and salt. Cut in butter. Reserve 1/2 cup of the mixture for crumb topping. Stir together apple and 1/2 teaspoon lemon zest.
2. Add egg and milk; blend this with flour mixture, stirring lightly until evenly moist. Spoon into 12 greased medium-size muffin cups. Blend reserved crumb mixture with 1/2 teaspoon lemon zest, walnuts and 2 tablespoons sugar.
3. Sprinkle over batter and bake until toothpick or wire tester comes out clean, about 20 minutes.

flour, sugar, doubleacting baking powder, salt, butter, tart apple, freshly grated lemon zest, egg, milk, freshly grated zest, walnuts, sugar

Taken from www.cookbooks.com/Recipe-Details.aspx?id=841717 (may not work)