Lentil Picadillo Arepa Casserole

Name: Lentil Picadillo Arepa Casserole
Ingredients: 8 ounces Brown Lentils; 3 Cups Water; 1½ Tablespoons Grapeseed Oil; ½ Large White Onion, finely chopped; 3 Garlic Cloves, minced; 1 Jalapeno, finely chopped; 1 15 ounce Can Tomato Sauce; 1/4 Cup Water; ½-3/4 Tsp Salt, or to taste; ½ Tsp Black Pepper; 2 Medium Yukon Gold Potatoes, peeled & dice into ¼-1/2 inch pieces; 1 Large Carrot, diced into ¼ inch pieces; For the Arepa Biscuits:; 1 Cup PAN Harina; 1 Tsp Baking Powder; 1/4 Tsp Baking Soda; 1/4 Tsp Sea Salt; 1 Cup + 2 Tablespoons Warm Water; 2 Tablespoons Vegetable Oil