Blueberry Oatmeal Muffins

To keep muffin batter from turning purple, toss frozen blueberries with flour before adding them to mix. If you don’t have buttermilk on hand, you can use 1 tablespoon of white vinegar or lemon juice plus enough milk to measure 1 cup. Stir and let stand for 5 minutes. You can also use 1 cup of plain yogurt or 1-3/4 teaspoons cream of tartar plus 1 cup milk.

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