In a small bowl, whisk eggs, milk and salt. Add flour; beat until smooth. Melt 1 teaspoon butter in a 10-in. nonstick skillet. Pour 1/4 cup batter into center of skillet; lift and turn pan to cover bottom. Cook until lightly browned; turn and brown the other side. Remove and keep warm. Repeat with remaining batter, adding butter to skillet as needed. Spread crepes with butter and jelly; roll up. Dust with confectioners' sugar. Serve immediately.