Impossible Mexican Fiesta Casserole Recipe

Name: Impossible Mexican Fiesta Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 pound ground beef, lean; 2 cups biscuit baking mix (bisquick); 1 x salt and black pepper to taste; 1/2 cup water; 4 ounces cheddar cheese shredded; 1 cup tomatoes thinly sliced; 1 cup sour cream dairy; 3/4 cup green bell peppers chopped; ⅔ cup mayonnaise; 1 x paprika optional; 2 tablespoons onions finely chopped

Servings: persons

1
Heat the oven to 375F (190C).
2
Cook and stir the meat in a large skillet until brown.
3
Drain off the excess fat.
4
Season the meat with the salt and pepper, then set aside.
5
Mix the cheese, sour cream, mayonnaise and onion and set this mixture aside.
6
Stir the baking mix and water together until a soft dough forms.
7
With floured fingers, pat the dough in a greased baking pan, 13 x 9 x 2-inches, pressing the dough 1/2 inch up the sides of the pan.
8
Layer the meat, tomato slices, and green pepper onto the dough.
9
Spoon the sour cream mixture over the top and sprinkle with the paprika, if used.
10
Bake uncovered until the edges of the dough are light brown, 25 to 30 minutes.
11
Cool 5 minutes and then cut into squares.

896

kcal

Calories

Fat

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 11 ingredients. The key ingredients include: 1 pound ground beef, lean, 2 cups biscuit baking mix (bisquick), 1 x salt and black pepper to taste, 1/2 cup water, and more.

Yes, Impossible Mexican Fiesta Casserole falls under the Baking & Desserts category and is a great choice for this type of meal.

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

That's it — enjoy your meal!

Impossible Mexican Fiesta Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions