Preheat oven to 400°. Combine flour and 1 cup sugar in a large bowl; make a well in center of mixture.

Stir together sour cream and next 4 ingredients; add to flour mixture, stirring just until dry ingredients are moistened. Gently fold strawberries into batter. Spoon batter into lightly greased 12-cup muffin pans, filling three-fourths full. Sprinkle remaining 1/4 cup sugar over batter.

Bake at 400° for 16 to 18 minutes or until golden brown and a wooden pick inserted in center comes out clean. Cool in pans on a wire rack 1 minute; remove from pans to wire rack, and cool 10 minutes.

Strawberry Curd

4 cups sliced fresh strawberries

1/2 cup sugar

2 tablespoons cornstarch

1/4 cup fresh lime juice

3 large eggs

2 large egg yolks

3 tablespoons butter

Process strawberries in a blender or food processor until smooth, stopping to scrape down sides as needed. Press strawberries through a large wire-mesh strainer into a medium bowl, using back of a spoon to squeeze out juice; discard pulp and seeds. Combine sugar and cornstarch in a 3-qt. saucepan; gradually whisk in strawberry puree and fresh lime juice. Whisk in 3 large eggs and 2 egg yolks. Bring mixture to a boil over medium heat, whisking constantly, and cook, whisking constantly, 1 minute. Remove from heat, and whisk in butter. Place plastic wrap directly on warm curd (to prevent a film from forming); chill 8 hours. Serve with hot biscuits, Strawberry-Lemonade Muffins, or use as a filling for tart shells.