In a large bowl, whisk eggs, milk, melted butter, sugar and salt.
Beat in flour until smooth; let the batter stand for 30 minutes.
Heat butter or oil (or use pan spray) in an eight-inch non-stick crepe pan over medium heat. Ladle three to four ounces of batter into the center of the skillet; lift and turn the pan to cover the bottom.
Cook one to two minutes per side until lightly browned and cooked through. Set aside and keep warm. Repeat until all the batter has been used.
Reserve the crepes until needed.
Rhubarb Sauce
Combine the sugar, cornstarch, nutmeg, water, strawberry, and rhubarb in a saucepan. Bring to a boil over medium heat; cook and stir for five minutes or until slightly thickened and rhubarb is tender.
Remove the saucepan from the heat. Allow the mixture to cool slightly.
Serve
Lay out a crepe and spoon a line of ricotta cheese followed by a line of the sauce. Roll like a cigar and place it onto a plate.
Serve immediately, either warm or room temperature with the remaining sauce. Enjoy!