Kitchen sink cookies are not just one type of cookie, with only selected ingredients, but a full breadth of ingredients, a run of the pantry & throwing in whatever strikes your fancy e.g., potato chips, toffee bits, nuts, etc. Below is simply my version.
3/4 cup butter, cold & cut into tablespoons
1/4 cup Crisco
1 1/4 cups brown sugar
1/2 cup granulated sugar
2 tsp vanilla extract
1 tsp salt
1 tsp baking soda
1 cup (or per desired amount) chocolate chips
3/4 cups chopped pretzels
3/4 cups caramel bits
Combine butter, Crisco, & sugars together until creamed & light & fluffy. Beat in the eggs & vanilla. Sprinkle baking soda & salt over the dough & add in flour. Mix until it comes together. Fold in the chocolate chips, pretzels, & caramel bits.
Cover & refrigerate dough for one hour.
Heat oven to 375 degrees. Drop by 1-2 rounded tablespoons. Bake for 9-10 minutes; being careful not to over bake.