In blender, combine flour, milk, cream, eggs, sugar, and pinch of salt and blend until smooth. Cover and refrigerate 30 minutes.
Heat an 8-inch sauté pan over medium-low heat. Melt 1 tsp. butter in pan.
Pour 3 T. batter into center of pan and swirl to coat bottom thinly. Cook 2 minutes, or until edges of crêpe are light brown.
Loosen edges gently with thin spatula and carefully turn crêpe over. Continue cooking 1 minute, or until bottom begins to brown in spots.
Transfer crêpe to a plate. Repeat with remaining batter, adding butter to pan as needed, and forming 12 crêpes in total. Clean pan.