Preheat oven to 400 degrees F (205 degrees C). Grease 12 muffin cups, or line with paper muffin liners.
Combine flour, sugar, baking powder, and salt in a large bowl. Mix lemon juice and milk in a measuring cup, to sour milk; beat eggs, oil, and milk mixture in a bowl. Stir egg mixture into flour mixture until just moistened; fold in cranberries. Fill prepared muffin cups two-thirds full; sprinkle with almonds.
Bake in preheated oven until a toothpick inserted into a muffin comes out clean, 18 to 20 minutes. Cool for 5 minutes before removing from pan to wire rack.
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