Cut tortillas in half. For each cone use half tortilla. Roll the two cut edges around each other, creating a cone.Fold the excess on the inside and press to bond together. Pierce the edges with a toothpick to firmly hold the cone together while baking, Brush very lightly with olive oil on the outside of each tortilla cones.
Place the cones upright in a muffin tin or baking cup. Bake for 15 minutes or until lightly browned. Let cool a little.
For the marinara sauce: Drain the tomatoes and remove juice and seeds inside. Transfer into a blender (I use a Vitamix), add olive oil, oregano, salt and pepper. Blend until just combined to keep a chunky texture.
Fill the cones with marinara sauce and mozzarella cubes. Place your filled pizza cones in an oven-safe mug, glassware, or a specialized rack that can hold them upright, and bake for an extra 2-3 minutes on 200C/400F, or until the cheese is melted and cones are golden brown.
Take out from the oven and serve immediately while they're nice and hot.
Makes 6 mini taco pizza cones. You can prepare the cones ahead, and store in an airtight container until ready to use.