Blend all the sauce ingredients together in a blender or food processor until mostly smooth.
Place the rice, lentils, sauce, and broth in a slow cooker. Cover and cook on high for 4-6 hours or low for 6-7 hours until soft. (Brown rice takes a long time to cook – when in doubt, let it cook longer!)
Heat a skillet over medium high heat. Layer the following: tortilla, ¼ cup cheese, ½ cup filling, ¼ cup cheese, tortilla. Spread the outsides of the tortillas with butter and fry on each side for 3-5 minutes until golden brown. Remove from heat and let stand for a few minutes (they’ll hold together better). Cut and serve! May I suggest topping with Magic Green Sauce?