Melt butter in a large skillet over medium heat. Add eggs and cook, scrambling them. Remove from stove when just cooked. Add salt and pepper and stir in spinach. Allow to cool.
Lay out tortilla on a work surface. Spoon egg & spinach mixture down the middle, then top with ham and cheese. Roll up tightly, finishing with the seam down.
Place on baking tray. Repeat with remaining tortillas. Spray generously with oil. Bake for 15 - 20 minutes or until golden. Serve immediately!
Notes
Freezing: Allow to cool then wrap in cling wrap and freeze. To serve, thaw (or defrost in microwave) then reheat in the microwave or oven.